QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#521867 | #9162. COVID tests | Dan4Life | 62.22 | 599ms | 4120kb | C++23 | 2.1kb | 2024-08-16 16:00:28 | 2024-08-16 16:00:28 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define sz(a) (int)a.size()
#define all(a) begin(a), end(a)
using ll = long long;
using vi = vector<int>;
using ar2 = array<int,2>;
using ar3 = array<int,3>;
using ar4 = array<int,4>;
const int INF = (int)2e9;
const int mxN = (int)1e6+10;
int N;
double P;
bool test_students(std::vector<bool> mask) {
assert(mask.size() == (size_t)N);
std::string mask_str(N, ' ');
for (int i = 0; i < N; i++)
mask_str[i] = mask[i] ? '1' : '0';
printf("Q %s\n", mask_str.c_str());
fflush(stdout);
char answer;
scanf(" %c", &answer);
return (answer == 'P');
}
vector<bool> find_positive() {
vector<bool> answer(N,0), test(N,0);
if(!P) return answer;
if(P>=0.3){
for(int i = 0; i < N; i++){
test[i]=1;
if(test_students(test))
answer[i]=1;
test[i]=0;
}
return answer;
}
int B = 1; double prob = 1.0-P;
while(prob>=0.5) prob*=(1.0-P), B++;
for(int i = 0; i < N; i+=B){
int rr = min(N,i+B)-1;
while(i<=rr){
fill(begin(test)+i,begin(test)+rr+1,1);
int chk = test_students(test);
fill(begin(test)+i,begin(test)+rr+1,0);
if(!chk) break;
int l = i, r = rr+1;
while(l<r){
int mid = (l+r)/2;
fill(begin(test)+l,begin(test)+mid+1,1);
int chk = test_students(test);
fill(begin(test)+l,begin(test)+mid+1,0);
if(chk) r=mid;
else l=mid+1;
}
answer[l]=1; i=l+1,rr=min(N-1,l+B);
}
fill(begin(test)+i,begin(test)+rr+1,0);
}
return answer;
}
int main() {
int T;
scanf("%d %lf %d", &N, &P, &T);
for (int i = 0; i < T; i++) {
vector<bool> answer = find_positive();
assert(answer.size() == (size_t)N);
string answer_str(N, ' ');
for (int j = 0; j < N; j++)
answer_str[j] = answer[j] ? '1' : '0';
printf("A %s\n", answer_str.c_str());
fflush(stdout);
char verdict;
scanf(" %c", &verdict);
if (verdict == 'W')
exit(0);
}
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Subtask #1:
score: 10
Accepted
Test #1:
score: 10
Accepted
time: 11ms
memory: 3896kb
input:
1000 0.789673 1 P N P P P P P P N P P N P N P P P P P N P P P P P P N P P P P P P P P P P P P P P P P P P N N N P P P P N P P P P N N P P P N P P P P N P P P P P N N P N P P P P P N P P P P P P P P P P P P P P P P P P N N P N P P P P P P P P N P N P P P N N P P P P P P P P P P P P P P P P P P P P N ...
output:
Q 1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000...
result:
points 1.0 1.0 translate:success
Test #2:
score: 10
Accepted
time: 11ms
memory: 3772kb
input:
1000 0.686378 1 N P N N N P N N P N P P N N P P P P N P P P N P P P N N P N P P P N N N P N P P P N P P P P P P N N P P P N P P P P P P P P P P P P P P P P P P N N P P N N N P P N P N P P P P P N P N N P P P N P N N P N P P P P N P N P P P P N P P N P P P N P N P P N P N N P P N P N P P N N P N N P ...
output:
Q 1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000...
result:
points 1.0 1.0 translate:success
Test #3:
score: 10
Accepted
time: 0ms
memory: 3896kb
input:
1000 0.873862 1 P P P P P P P P P P P P P P P P P P P P N P P P P P P P P P P P P P P P N P P P P P P P P P N P P P P P P P P P P P P P N P P P P P P P P P N P P P N P P N P P P P P P N P P P P P N P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P N P P P P P N P P N P P P P P P P P ...
output:
Q 1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000...
result:
points 1.0 1.0 translate:success
Test #4:
score: 10
Accepted
time: 6ms
memory: 3888kb
input:
1000 0.669578 1 P P N P P P P P N P N P P P N P P P P P P P N P P P P N N P N P N P P N P P N P P N P N P P P P P P P P P P P P P N N P P N P P N N P P N N P N P N P N P P N N P P P P P P P P P P N P P N P P N P P P P P P N P P P P N N N P N P P N P P N N P P N P P P N P P N P P P P P N P P N P P P ...
output:
Q 1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000...
result:
points 1.0 1.0 translate:success
Test #5:
score: 10
Accepted
time: 2ms
memory: 3888kb
input:
1000 0.907052 1 P P P P P P P N P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P N P P P P N P P P P P P P P P P P P N P P P P P P P P P P P P P P P P P P P P P P N P P P P P N P P P P P P P P P N P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P N P P P N P P P P N N P ...
output:
Q 1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000...
result:
points 1.0 1.0 translate:success
Test #6:
score: 10
Accepted
time: 7ms
memory: 4116kb
input:
1000 0.844418 1 P P P P P P P P P P P P N P P P P P P N P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P N P P P P P N P P P N P P P P P N P P P P P P N P P P N P N P P N P P P N P P N P P P N N N P P P P N N P N N P P P P P P P N P N P P P P N P P P P P P P P P P P P P P P P P P ...
output:
Q 1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000...
result:
points 1.0 1.0 translate:success
Test #7:
score: 10
Accepted
time: 12ms
memory: 3880kb
input:
1000 0.533576 1 P P P N N N N P P N N P N P N P P N P N N P N P N P P N P N P N P P P P N N N P P P P P N N P P N P P P P P N P P P P N N N N N P N P P P N P N P P P N P P P P N P N P P N N P N N P N P P N N P N P P N N P N N P N N P P N N N N P N P N N P N N P P N P P P P P N N N P P N P N P N P P ...
output:
Q 1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000...
result:
points 1.0 1.0 translate:success
Test #8:
score: 10
Accepted
time: 5ms
memory: 3880kb
input:
1000 0.415944 1 N N N N N N N P N N P N N P N P N N N P N N N N N N N N N P N N N N P P P P N P N N P N N P N N P P N P P P N N P N P N N N N N P N P N P N P N N N P N N N N P N N P P P P P N N N P P N N N P N N P N P P P N P P N P P P N P N P P P P P N N N P P P P P P P P N N N P P N N N N N N P P ...
output:
Q 1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000...
result:
points 1.0 1.0 translate:success
Test #9:
score: 10
Accepted
time: 0ms
memory: 4116kb
input:
1000 0.596017 1 P N P P N N P N N P P P N P N N P P P N P N P N N N P N N P N N P N P P P N P P N P P P N P N P P P N P N N P P P N P N N N P N N N P P P N P P P N N P N N P P N N P N P N N P N N P N P P N N P P P P N P P P N N P P P P P P N P P P N P P N P P P P P P P P N P P P P N N P P P N P N P ...
output:
Q 1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000...
result:
points 1.0 1.0 translate:success
Test #10:
score: 10
Accepted
time: 2ms
memory: 4008kb
input:
1000 0.157686 1 N N P N P P P N P P P P P P P P N P N P N N N P P P N P N P P P P P P P P N P P P N N P P P P N N N P N P P N N N P P P P P P P P N P P N P P P P N P N P N P P P P P P P P P P P P N N N P N P P P P N N P P P P N P P P P N P P N N N P P N N P P P P P P P N N P P P N P P N N N P N P N ...
output:
Q 1111100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000...
result:
points 1.0 1.0 translate:success
Test #11:
score: 10
Accepted
time: 0ms
memory: 3832kb
input:
1000 0.380215 1 N N N P N N N P N N P N N N P P N P N N N P P P N P P N N N P N N N P N N N P P P P N N N N N P P N N N N N N N N N N N N N N P P N N N N P P N N N P N N N N N P N P N N P N N N N P N N N N P P P P P P P N N N N N N N N N N P N N P N N N P N N N N N N N N N P N P N P N N P P N N P P ...
output:
Q 1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000...
result:
points 1.0 1.0 translate:success
Test #12:
score: 10
Accepted
time: 5ms
memory: 4084kb
input:
1000 0.432565 1 P N P N N P N N N P P P N P P N N N N N N N N N P P P N P P N N P P P P N P P N N N N P P P P N P N N P P P N N N N P N P N P N P N P P N N P N N P N N N P N P N N N P N N P N P N N N P N N P P P P P P N P N N N N N N N P P N P N N N N P P P N P N N P P P N P P P P P P N P N P P N P ...
output:
Q 1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000...
result:
points 1.0 1.0 translate:success
Test #13:
score: 10
Accepted
time: 4ms
memory: 3828kb
input:
1000 0.509199 1 P P N P N N N P P N N N N N P N N P P N P P N P P P P P N N P N P P N P P P P P P P P P P N P P P N N P N P P N P N P N N P N P N P N N N N N P P N N N P P P N N P P P P N N N N P P N P N N N P P P P P N N N P P N P P N P N P P P N N P P N N N N N N P P P N N P P N N N N N N P P N N ...
output:
Q 1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000...
result:
points 1.0 1.0 translate:success
Test #14:
score: 10
Accepted
time: 0ms
memory: 4120kb
input:
1000 0.381646 1 N N N P N N N N P P P N N N N N P N N N P N P N P N P N N N N N N N P P N N N N P P N N N N N P N N N N P N P N N N N P P P N P P N P P P N P N P P P N N N N N P N N P P N P P N P P N N N N P P N N P N N N N N P N N P P N N N N N P P N P N N P N N N P P N N P N N N N P P N N N N N P ...
output:
Q 1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000...
result:
points 1.0 1.0 translate:success
Test #15:
score: 10
Accepted
time: 6ms
memory: 3820kb
input:
1000 0.42815 1 N P P N P N P P P N N P N N P N N P P P N N N N P P P N N N P P N P N N P N N N P P N N N N P N N P P N P N N N N P N N N N N P N P P N P P P P N N N P P P N P P P N P P N P N N N P N N P N N P P N P P N N P N N P P P P P P P N N N P N P N P N N N N N N N P N N N P N P P P P N N N P N...
output:
Q 1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000...
result:
points 1.0 1.0 translate:success
Test #16:
score: 10
Accepted
time: 0ms
memory: 3832kb
input:
1000 1 1 P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P...
output:
Q 1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000...
result:
points 1.0 1.0 translate:success
Test #17:
score: 10
Accepted
time: 1ms
memory: 3880kb
input:
1000 0 1 C
output:
A 0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000...
result:
points 1.0 1.0 translate:success
Subtask #2:
score: 52.22
Acceptable Answer
Test #18:
score: 90
Accepted
time: 22ms
memory: 3920kb
input:
1000 0.001 300 N N C P N N N N N N N N P N C N P P N N N P P N N P P P N N N P P P P P P N N N P P N C N N C N N C P P N N N N N P P N N C N P P N P P N P P P P N C N N C N N C P P N P N N N N N N N N C N N C N P P N N N P P P N P P N N P P N P P N C P N N N P N N N N P P P P N N P P P N P N P P P P...
output:
Q 1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111...
result:
points 1.0 1.0 Output is correct (P=0.001, F=15.1, Q=11.0) -> 90.00 points
Test #19:
score: 90
Accepted
time: 40ms
memory: 3824kb
input:
1000 0.005256 300 P N P N N P P N P P P P N P P P N N P N P P P N N N N N P N P P P N P N N P P N N N N P N C N N N N P N P P N P P N N P N N P N N N N P P N N P P N P N C N N N N N N P N N N N P N N N C N P P P N P P N N N P P P P N N P N P P P P P N P P N N N P P N N N P P N N P N P N P P P N N C ...
output:
Q 1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111110000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000...
result:
points 1.0 1.0 Output is correct (P=0.005256, F=51.1, Q=46.8) -> 90.00 points
Test #20:
score: 90
Accepted
time: 68ms
memory: 4112kb
input:
1000 0.011546 300 P P N P P P P P P P N P P P N N N P N P P P N P N P P P P P N N P P P P P P N P P P P P P N P P N N P N N P P P P N N N N N N N N N N P N P N N N P N P N N P P N P P N P N N N P P N N N N N C N P N P P N N P N N N N P P N P N N P N N N N N N N P P N N N P N N N P P P P N N N N N C ...
output:
Q 1111111111111111111111111111111111111111111111111111111111110000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000...
result:
points 1.0 1.0 Output is correct (P=0.011546, F=94.9, Q=91.4) -> 90.00 points
Test #21:
score: 87.8
Acceptable Answer
time: 159ms
memory: 3916kb
input:
1000 0.028545 300 P P P P P P N N N P P P N N N N P P N P P P P P P P N N N N P N N N P P P P P P N N N P P P P P N N N N P N N N P N P N N P P N P N P P P N P P N N N P N N P N P P P P P P P P P N N P P P N P P N P N N P N N N P N N P P P N P N N P N P P N N N P N N P P P N N P N N P P N N N P P N ...
output:
Q 1111111111111111111111110000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000...
result:
points 0.97555555560 0.9755555556 Output is correct (P=0.028545, F=191.5, Q=192.7) -> 87.80 points
Test #22:
score: 81.89
Acceptable Answer
time: 186ms
memory: 3880kb
input:
1000 0.039856 300 P P N N N N P P P P P N P P P N P N N N N N N P N N P P N P P N P N P P P P P N P P N P P P P P N P P N P P N P N P P P N P N N P P P N P P N N P P P N N P N P N N P N N P P P N N N N N N N N P P P N N N P P N N N N P N N P P N P P N P N N P N P P N P N N N P P P P P P P P P P P N ...
output:
Q 1111111111111111110000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000...
result:
points 0.90988888890 0.9098888889 Output is correct (P=0.039856, F=246.3, Q=252.4) -> 81.89 points
Test #23:
score: 73.6
Acceptable Answer
time: 264ms
memory: 3820kb
input:
1000 0.068648 300 N P P N P N P P N P P P P N P P P P P P P N P P P P N P P P P P P P P P N P N P N P P N P N N N P P P N P N P N P N P N N N P P N N N N P P P P N N N N N N N P N N P P N P N P P P P P P P P P P N P P N P P N P N N P N P P P P N N N P N P P P P N P N N N N P P P P N P P N N P P N N ...
output:
Q 1111111111000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000...
result:
points 0.81777777780 0.8177777778 Output is correct (P=0.068648, F=366.2, Q=386.6) -> 73.60 points
Test #24:
score: 77.81
Acceptable Answer
time: 407ms
memory: 3884kb
input:
1000 0.104571 300 N N N P P P P N P N P N P P P N P P P P N N P N N P P P N P P N P N P P N P P N N P P P N P P P P P P N N P P P P N N N N N P N P N N N P P P N N N P P N P N N N N P P P P P P P N P P N N P P N P P P N N N P P N N N P P N N N N P P N P P P N P P P P P P N P P P N P N P P N N N P P ...
output:
Q 1111111000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000...
result:
points 0.86455555560 0.8645555556 Output is correct (P=0.104571, F=490.3, Q=509.5) -> 77.81 points
Test #25:
score: 60.83
Acceptable Answer
time: 499ms
memory: 3828kb
input:
1000 0.158765 300 N N N P P P N N P P P P N P N P N P P P P N N N N N N N P P P P P P P N N N N P P N N N P N P P N N N P P P P N P P N N N P P P P N N P N P N P P N P N P N N P P P N N N N N P N P N P P P P P P P P N P N P N N N N N P N P P N P N P N P P N P P P P P P P N P N P P N P P P N P N P P ...
output:
Q 1111100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000...
result:
points 0.67588888890 0.6758888889 Output is correct (P=0.158765, F=639.1, Q=715.7) -> 60.83 points
Test #26:
score: 52.22
Acceptable Answer
time: 599ms
memory: 3832kb
input:
1000 0.2 300 N P P P P N P P P P P P P N N N N N P P P N P P P N P P P P N P P P P P P P N P P N P P P N P N P P P P N P N P P P P P N P P P N P P N N N N P P N P P P P P P P P N P P P N N P P P N P N P P N P N N N P P P N P P P N P P P P P P N N P P N P P P P P P P N P P N N P P P N P P P N P P P N...
output:
Q 1111000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000...
result:
points 0.58022222220 0.5802222222 Output is correct (P=0.2, F=731.4, Q=863.7) -> 52.22 points