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#521326#9162. COVID testsDan4Life#0 1835ms4112kbC++232.4kb2024-08-16 05:08:072024-08-16 05:08:07

Judging History

你现在查看的是最新测评结果

  • [2024-08-16 05:08:07]
  • 评测
  • 测评结果:0
  • 用时:1835ms
  • 内存:4112kb
  • [2024-08-16 05:08:07]
  • 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);
	int l = 0; M.clear();
	while(l<N){
		for(int i = 0; i < N; i++) test[i]=0;
		for(int i = l; i < N; i++) test[i]=1;
		if(!test_students(test)) return answer;
		int r = N-1, oldL = l;
		while(l<r){
			int mid = (l+r)/2;
			for(int i = 0; i < N; i++) test[i]=0;
			for(int i = oldL; i<=mid; i++) test[i]=1;
			if(test_students(test)) r=mid;
			else l=mid+1;
		}
		answer[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: 0
Wrong Answer

Test #1:

score: 0
Wrong Answer
time: 41ms
memory: 3800kb

input:

1000 0.789673 1
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
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
N
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
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
...

output:

Q 1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111...

result:

points 0.0 0.0 translate:wrong

Subtask #2:

score: 0
Time Limit Exceeded

Test #18:

score: 90
Accepted
time: 13ms
memory: 3832kb

input:

1000 0.001 300
N
C
P
N
P
N
N
P
P
P
N
P
P
N
C
P
N
N
P
N
P
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
C
N
C
P
P
N
P
N
P
N
N
P
N
P
N
C
P
N
N
P
P
P
N
N
N
N
P
N
C
N
C
N
C
P
P
N
P
P
P
P
N
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N
C
P
N
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P
N
P
P
P
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N
P
P
N
P
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N
C
P
N
P
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P
P
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N
P
P
P
P
P
P
N
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P
P
P
N
P
N
P
P
P
P
P...

output:

Q 1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111...

result:

points 1.0 1.0 Output is correct (P=0.001, F=15.1, Q=10.7) -> 90.00 points

Test #19:

score: 78.89
Acceptable Answer
time: 70ms
memory: 3824kb

input:

1000 0.005256 300
P
P
P
P
N
P
N
N
N
N
P
P
P
P
P
P
P
N
P
P
N
P
P
N
N
P
P
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N
N
P
N
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P
N
N
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N
P
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P
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N
N
C
P
N
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P
N
N
P
N
P
N
N
P
N
P
N
P
P
P
P
P
N
P
P
N
P
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N
P
N
C
P
N
N
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N
P
N
N
P
N
N
C
P
P
P
N
P
P
N
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P
P
P
P
P
N
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N
P
P
P
P
P
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N
N
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N
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N
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P
...

output:

Q 1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111...

result:

points 0.87655555560 0.8765555556 Output is correct (P=0.005256, F=51.1, Q=52.9) -> 78.89 points

Test #20:

score: 49.17
Acceptable Answer
time: 171ms
memory: 4112kb

input:

1000 0.011546 300
P
P
P
P
P
P
N
P
P
P
P
P
P
P
P
P
P
P
N
P
P
P
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P
P
N
N
P
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P
P
P
P
N
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P
P
P
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P
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N
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P
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P
N
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P
P
N
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N
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N
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P
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N
N
N
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P
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P
N
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C
P
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N
...

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: 31.73
Acceptable Answer
time: 445ms
memory: 3940kb

input:

1000 0.028545 300
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
N
P
P
N
N
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P
P
P
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N
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P
P
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P
P
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N
N
P
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P
P
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P
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P
P
N
N
P
P
P
P
P
N
P
P
P
P
P
P
P
P
N
P
P
P
P
P
P
P
P
P
P
P
P
P
N
N
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N
P
P
P
P
P
P
N
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N
P
P
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N
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...

output:

Q 1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111...

result:

points 0.35255555560 0.3525555556 Output is correct (P=0.028545, F=191.5, Q=279.4) -> 31.73 points

Test #22:

score: 26.68
Acceptable Answer
time: 535ms
memory: 4088kb

input:

1000 0.039856 300
P
P
P
P
P
P
P
N
P
P
N
P
P
P
P
P
P
N
P
P
N
N
P
P
P
P
P
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P
N
N
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P
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N
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N
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P
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N
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N
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P
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P
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P
P
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N
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P
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P
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P
P
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N
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N
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P
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P
P
P
P
P
N
N
P
P
P
P
P
P
P
N
P
P
P
P
P
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P
P
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N
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...

output:

Q 1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111...

result:

points 0.29644444440 0.2964444444 Output is correct (P=0.039856, F=246.3, Q=392.4) -> 26.68 points

Test #23:

score: 20.67
Acceptable Answer
time: 815ms
memory: 4080kb

input:

1000 0.068648 300
P
P
P
P
P
P
P
N
N
N
P
P
P
P
P
P
P
P
P
P
N
N
P
P
P
P
P
P
P
P
P
N
N
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
N
P
N
N
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
P
P
N
P
P
P
P
P
P
P
P
P
P
P
N
P
P
P
P
P
P
P
P
N
P
N
N
N
P
P
P
P
P
P
P
N
P
P
P
P
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P
P
P
P
P
N
P
P
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P
P
N
N
P
...

output:

Q 1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111...

result:

points 0.22966666670 0.2296666667 Output is correct (P=0.068648, F=366.2, Q=673.2) -> 20.67 points

Test #24:

score: 16.81
Acceptable Answer
time: 1255ms
memory: 4112kb

input:

1000 0.104571 300
P
P
P
P
P
P
N
P
N
P
N
P
P
P
P
P
P
P
N
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
N
P
N
P
P
P
P
P
P
P
P
P
P
P
N
P
P
P
P
P
P
P
P
P
N
P
N
P
P
P
P
P
P
P
P
P
N
P
P
P
P
P
P
P
P
P
N
N
P
P
P
P
P
P
P
P
P
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N
P
P
P
P
P
P
P
P
P
P
P
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P
P
P
P
P
P
P
N
N
P
P
P
P
P
P
P
P
P
P
...

output:

Q 1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111...

result:

points 0.18677777780 0.1867777778 Output is correct (P=0.104571, F=490.3, Q=1023.8) -> 16.81 points

Test #25:

score: 13.55
Acceptable Answer
time: 1835ms
memory: 3772kb

input:

1000 0.158765 300
P
P
P
P
P
P
N
P
P
P
P
P
P
P
P
P
P
P
P
N
P
N
P
P
P
P
P
P
P
N
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P
N
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
N
P
P
N
P
P
P
P
P
P
P
P
P
P
P
P
N
P
P
P
P
P
P
N
P
P
N
P
P
P
P
P
P
P
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N
N
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N
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P
P
P
N
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N
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P
P
P
P
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P
N
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P
P
P
P
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P
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N
P
N
N
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P
P
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P
N
P
P
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P
P
P
P
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P
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P
P
P
...

output:

Q 1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111...

result:

points 0.15055555560 0.1505555556 Output is correct (P=0.158765, F=639.1, Q=1540.6) -> 13.55 points

Test #26:

score: 0
Time Limit Exceeded

input:

1000 0.2 300
P
P
P
P
P
P
P
P
N
P
P
P
P
P
P
P
P
P
P
N
P
P
P
P
P
P
P
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P
P
P
P
N
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P
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P
P
P
N
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P
P
N
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
N
P
P
P
P
P
P
P
P
P
P
P
P
N
P
P
P
P
P
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N
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P
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P
P
P
P
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N
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N
N
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P
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P
P
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P
P
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N
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P
P
P
N
N
P...

output:

Q 1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111...

result: