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#521335#9162. COVID testsDan4Life#32.11 1021ms4076kbC++233.0kb2024-08-16 05:59:042024-08-16 05:59:04

Judging History

你现在查看的是最新测评结果

  • [2024-08-16 05:59:04]
  • 评测
  • 测评结果:32.11
  • 用时:1021ms
  • 内存:4076kb
  • [2024-08-16 05:59:04]
  • 提交

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;
map<vector<bool>,bool> M;
// This function performs a test on a subset of samples.
// Its argument is a vector of Booleans of length N,
// where the i-th element is true if the i-th sample should be added to the mix.
// It returns true if (and only if) at least one of the samples in the mix is positive.
bool test_students(std::vector<bool> mask) {
    assert(mask.size() == (size_t)N);
	//if(M.count(mask)) return M[mask];
    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');
}
 
/// You should implement:
 
// This function will be called once for each test instance.
// It should use test_students to determine which samples are positive.
// It must return a vector of Booleans of length N,
// where the i-th element is true if and only if the i-th sample is positive.
vector<bool> find_positive() {
    vector<bool> answer(N,false), test(N,false);
    vector<int> XD(N,0); iota(all(XD),0); random_shuffle(all(XD));
    if(P>0.03){
		int likely = P*1000*1.6;
		const int B = 10;
		for(int i = 0; i < N; i+=B){
			if(!likely) break;
			for(int j = i; j < min(N,i+B); j++) 
				test[XD[j]]=1;
			if(test_students(test)){
				for(int j = i; j < min(N,i+B); j++) test[XD[j]]=0;
				for(int j = i; j < min(N,i+B); j++) {
					test[XD[j]]=1;
					if(test_students(test))
						answer[XD[j]]=1, likely--;
					test[XD[j]]=0;
				}
			}
			for(int j = i; j < min(N,i+B); j++) 
				test[XD[j]]=0;
		}
		return answer;
	}
	int l = 0;
	while(l<N){
		for(int i = 0; i < N; i++) test[XD[i]]=0;
		for(int i = l; i < N; i++) test[XD[i]]=1;
		if(!test_students(test)) return answer;
		for(int i = 0; i < N; i++) test[XD[i]]=0;
		int r = N-1, oldL = l;
		while(l<r){
			int mid = (l+r)/2;
			for(int i = oldL; i<=mid; i++) test[XD[i]]=1;
			if(test_students(test)) r=mid;
			else l=mid+1;
			for(int i = oldL; i<=mid; i++) test[XD[i]]=0;
		}
		answer[XD[l]]=1; l++;
	}
    return answer;
}
 
int main() {
    int T;
    scanf("%d %lf %d", &N, &P, &T);
 
    // You may perform any extra initialization here.
 
    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: 8ms
memory: 3728kb

input:

1000 0.789673 1
P
P
P
N
P
P
P
P
N
P
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P
P
N
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P
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N
P
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P
...

output:

Q 0000000000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010000000...

result:

points 1.0 1.0 translate:success

Test #2:

score: 10
Accepted
time: 13ms
memory: 4028kb

input:

1000 0.686378 1
P
P
P
P
P
P
N
P
N
N
P
P
P
P
N
N
N
N
P
N
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...

output:

Q 0000000000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010000000...

result:

points 1.0 1.0 translate:success

Test #3:

score: 10
Accepted
time: 4ms
memory: 3868kb

input:

1000 0.873862 1
P
P
P
P
P
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P
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P
N
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...

output:

Q 0000000000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010000000...

result:

points 1.0 1.0 translate:success

Test #4:

score: 10
Accepted
time: 0ms
memory: 3776kb

input:

1000 0.669578 1
P
N
P
N
N
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P
N
N
P
N
P
N
N
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...

output:

Q 0000000000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010000000...

result:

points 1.0 1.0 translate:success

Test #5:

score: 10
Accepted
time: 2ms
memory: 3772kb

input:

1000 0.907052 1
P
P
P
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P
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...

output:

Q 0000000000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010000000...

result:

points 1.0 1.0 translate:success

Test #6:

score: 10
Accepted
time: 0ms
memory: 4076kb

input:

1000 0.844418 1
P
P
P
P
P
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P
N
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N
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...

output:

Q 0000000000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010000000...

result:

points 1.0 1.0 translate:success

Test #7:

score: 10
Accepted
time: 0ms
memory: 3924kb

input:

1000 0.533576 1
P
N
P
N
N
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P
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...

output:

Q 0000000000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010000000...

result:

points 1.0 1.0 translate:success

Test #8:

score: 10
Accepted
time: 3ms
memory: 3932kb

input:

1000 0.415944 1
P
N
N
N
N
P
P
P
P
N
N
P
N
N
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...

output:

Q 0000000000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010000000...

result:

points 1.0 1.0 translate:success

Test #9:

score: 10
Accepted
time: 0ms
memory: 3732kb

input:

1000 0.596017 1
P
P
P
P
N
N
N
N
P
N
P
P
P
P
P
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...

output:

Q 0000000000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010000000...

result:

points 1.0 1.0 translate:success

Test #10:

score: 10
Accepted
time: 0ms
memory: 3800kb

input:

1000 0.157686 1
P
P
N
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N
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...

output:

Q 0000000000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010000000...

result:

points 1.0 1.0 translate:success

Test #11:

score: 10
Accepted
time: 0ms
memory: 3856kb

input:

1000 0.380215 1
P
N
N
P
P
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P
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...

output:

Q 0000000000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010000000...

result:

points 1.0 1.0 translate:success

Test #12:

score: 10
Accepted
time: 4ms
memory: 3848kb

input:

1000 0.432565 1
P
P
P
P
N
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P
P
N
N
N
P
N
N
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N
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...

output:

Q 0000000000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010000000...

result:

points 1.0 1.0 translate:success

Test #13:

score: 10
Accepted
time: 4ms
memory: 3924kb

input:

1000 0.509199 1
P
P
N
P
N
P
N
N
P
P
N
P
N
N
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N
N
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N
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N
N
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N
N
...

output:

Q 0000000000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010000000...

result:

points 1.0 1.0 translate:success

Test #14:

score: 10
Accepted
time: 8ms
memory: 3772kb

input:

1000 0.381646 1
P
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...

output:

Q 0000000000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010000000...

result:

points 1.0 1.0 translate:success

Test #15:

score: 10
Accepted
time: 0ms
memory: 3868kb

input:

1000 0.42815 1
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output:

Q 0000000000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010000000...

result:

points 1.0 1.0 translate:success

Test #16:

score: 10
Accepted
time: 6ms
memory: 3776kb

input:

1000 1 1
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output:

Q 0000000000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010000000...

result:

points 1.0 1.0 translate:success

Test #17:

score: 10
Accepted
time: 1ms
memory: 3900kb

input:

1000 0 1
N
C

output:

Q 1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111...

result:

points 1.0 1.0 translate:success

Subtask #2:

score: 22.11
Acceptable Answer

Test #18:

score: 90
Accepted
time: 13ms
memory: 3904kb

input:

1000 0.001 300
N
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output:

Q 1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111...

result:

points 1.0 1.0 Output is correct (P=0.001, F=15.1, Q=10.8) -> 90.00 points

Test #19:

score: 78.35
Acceptable Answer
time: 59ms
memory: 3924kb

input:

1000 0.005256 300
P
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...

output:

Q 1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111...

result:

points 0.87055555560 0.8705555556 Output is correct (P=0.005256, F=51.1, Q=53.0) -> 78.35 points

Test #20:

score: 49.17
Acceptable Answer
time: 109ms
memory: 4056kb

input:

1000 0.011546 300
P
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...

output:

Q 1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111...

result:

points 0.54633333330 0.5463333333 Output is correct (P=0.011546, F=94.9, Q=114.6) -> 49.17 points

Test #21:

score: 31.59
Acceptable Answer
time: 365ms
memory: 3728kb

input:

1000 0.028545 300
P
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...

output:

Q 1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111...

result:

points 0.3510 0.351 Output is correct (P=0.028545, F=191.5, Q=280.0) -> 31.59 points

Test #22:

score: 22.11
Acceptable Answer
time: 302ms
memory: 3924kb

input:

1000 0.039856 300
N
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...

output:

Q 0000000000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010000000...

result:

points 0.24566666670 0.2456666667 Output is correct (P=0.039856, F=246.3, Q=435.4) -> 22.11 points

Test #23:

score: 24.44
Acceptable Answer
time: 420ms
memory: 3872kb

input:

1000 0.068648 300
P
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...

output:

Q 0000000000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010000000...

result:

points 0.27155555560 0.2715555556 Output is correct (P=0.068648, F=366.2, Q=611.8) -> 24.44 points

Test #24:

score: 27.24
Acceptable Answer
time: 582ms
memory: 3932kb

input:

1000 0.104571 300
P
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...

output:

Q 0000000000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010000000...

result:

points 0.30266666670 0.3026666667 Output is correct (P=0.104571, F=490.3, Q=772.7) -> 27.24 points

Test #25:

score: 32.4
Acceptable Answer
time: 678ms
memory: 3776kb

input:

1000 0.158765 300
P
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...

output:

Q 0000000000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010000000...

result:

points 0.360 0.36 Output is correct (P=0.158765, F=639.1, Q=923.1) -> 32.40 points

Test #26:

score: 37.16
Acceptable Answer
time: 1021ms
memory: 3904kb

input:

1000 0.2 300
P
N
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output:

Q 0000000000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010000000...

result:

points 0.41288888890 0.4128888889 Output is correct (P=0.2, F=731.4, Q=991.4) -> 37.16 points