QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#742468 | #5349. 密钥 | KiharaTouma | 70 | 133ms | 162048kb | C++23 | 1.6kb | 2024-11-13 16:39:54 | 2024-11-13 16:39:54 |
Judging History
answer
//qoj5349
#include <bits/stdc++.h>
using namespace std;
const int T = 1e7;
int p[20000005];
int seed, n, k, S;
int pr[20000005];
int buc[20000005];
void solve(){
int le = 0, nw = 0;
int ans0, ansS, ansB;
p[0] = p[n];
for(int i = 1; i <= n; ++ i){
pr[i] = pr[i-1] + (p[i] == 1 ? 1 : -1);
if(p[i] == 1){
++ buc[T+pr[i]];
if(pr[i] > 0){
++ le;
}
}
}
for(int i = 1; i <= n; ++ i){
if(p[i-1] == 0){
if(le == 0){
ans0 = i;
}
if(le == S){
ansS = i;
}
}
if(p[i] == 0){
le += buc[T+nw];
-- nw;
} else {
++ nw;
le -= buc[T+nw];
-- buc[T+pr[i]];
if(pr[i]+nw > 0) -- le;
-- pr[i];
++ buc[T+pr[i]];
if(pr[i]+nw > 0) ++ le;
}
}
-- ans0;
if(!ans0){
ans0 = n;
}
-- ansS;
if(!ansS){
ansS = n;
}
printf("%d\n%d\n%d\n", ans0, ansS, ansB);
}
int getrand() {
seed = ((seed * 12321) ^ 9999) % 32768;
return seed;
}
void generateData() {
scanf( "%d%d%d", &k, &seed, &S );
int t = 0;
n = k * 2 + 1;
memset(p, 0, sizeof(p));
for( int i = 1; i <= n; ++i ) {
p[i] = (getrand() / 128) % 2;
t += p[i];
}
int i = 1;
while( t > k ) {
while ( p[i] == 0 ) ++i;
p[i] = 0;
--t;
}
while( t < k ) {
while( p[i] == 1 ) ++i;
p[i] = 1;
++t;
}
}
int main() {
generateData();
solve();
return 0;
}
Details
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Pretests
Final Tests
Test #1:
score: 7
Acceptable Answer
time: 3ms
memory: 85088kb
input:
5 1113 1
output:
1 2 0
result:
points 0.70 ok
Test #2:
score: 7
Acceptable Answer
time: 6ms
memory: 84652kb
input:
30 4567 15
output:
53 57 0
result:
points 0.70 ok
Test #3:
score: 7
Acceptable Answer
time: 0ms
memory: 84352kb
input:
900 9876 123
output:
1793 1307 0
result:
points 0.70 ok
Test #4:
score: 7
Acceptable Answer
time: 4ms
memory: 84988kb
input:
60000 5566 60000
output:
120001 8 0
result:
points 0.70 ok
Test #5:
score: 7
Acceptable Answer
time: 0ms
memory: 86244kb
input:
99999 9988 50000
output:
199993 1 0
result:
points 0.70 ok
Test #6:
score: 7
Acceptable Answer
time: 29ms
memory: 102856kb
input:
2000000 3479 1234567
output:
4000001 246933 0
result:
points 0.70 ok
Test #7:
score: 7
Acceptable Answer
time: 67ms
memory: 125224kb
input:
5000000 1010 999
output:
9999996 9994668 0
result:
points 0.70 ok
Test #8:
score: 7
Acceptable Answer
time: 105ms
memory: 147760kb
input:
8000000 8888 888888
output:
15999988 1777780 0
result:
points 0.70 ok
Test #9:
score: 7
Acceptable Answer
time: 127ms
memory: 156032kb
input:
9000000 9753 3333333
output:
17999996 666669 0
result:
points 0.70 ok
Test #10:
score: 7
Acceptable Answer
time: 133ms
memory: 162048kb
input:
10000000 10000 7142857
output:
19999994 5714287 0
result:
points 0.70 ok