제출 #1227561

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1227561		SpyrosAliv	COVID tests (CEOI24_covid)	C++20	10 / 100	1008 ms	408 KiB

Main

#include <bits/stdc++.h>
using namespace std;

int N;
double P;

bool test_students(vector<bool> mask) {
    assert(mask.size() == (size_t)N);

    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() {
    int n = N;
    vector<bool> curr;
    for (int i = 0; i < n; i++) curr.push_back(false);
    vector<bool> ans;
    for (int i = 0; i < n; i++) {
        curr[i] = true;
        ans.push_back(test_students(curr));
        curr[i] = false;
    }
    return ans;
}

void solve() {
    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; cin >> verdict;
    assert(verdict != 'W');
}

int main() {
    int T;
    scanf("%d %lf %d", &N, &P, &T);

    // You may perform any extra initialization here.
    while (T--) solve();
    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

Main.cpp: In function 'bool test_students(std::vector<bool>)':
Main.cpp:18:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   18 |     scanf(" %c", &answer);
      |     ~~~~~^~~~~~~~~~~~~~~~
Main.cpp: In function 'int main()':
Main.cpp:52:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   52 |     scanf("%d %lf %d", &N, &P, &T);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 0: 0 / 0
• Subtask 1: 10 / 10
• Subtask 2: 0 / 90