Submission #1044507

#	Time	Username	Problem	Language	Result	Execution time	Memory
1044507		dilanyan	COVID tests (CEOI24_covid)	C++17	0 / 100	1 ms	344 KiB

Main

//-------------dilanyan------------\\ 
 
#define _CRT_SECURE_NO_WARNINGS
#include<bits/stdc++.h>
#include<stdio.h>
using namespace std;
 
//------------------Kargpefines--------------------\\ 
 
#define ll long long
#define pb push_back
#define all(u) (u).begin(), (u).end()
#define pqueue priority_queue
#define upper upper_bound
#define lower lower_bound
#define umap unordered_map
#define uset unordered_set
 
void KarginSet(string name = "") {
    ios_base::sync_with_stdio(false); cin.tie(NULL);
    if (name.size()) {
        freopen((name + ".in").c_str(), "r", stdin);
        freopen((name + ".out").c_str(), "w", stdout);
    }
}
 
//-------------------KarginConstants------------------\\ 
 
const ll mod = 1e9 + 7;
const ll inf = 2e9;
 
//-------------------KarginCode-----------------------\\ 
 
const int N = 500005, M = 1000005;

int n;
double p;
bool ans[N], ask[N];
bool flag = true;

void rec(int l, int r) {
    if (r - l == 1) {
        if (l == n - 1) {
            fill(ask, ask + n, false);
            ask[n - 1] = true;
            cout << "Q ";
            string s;
            for (int i = 0;i < n;i++) {
                s += ('0' + ask[i]);
            }
            cout << s;
            cout << endl;
            char c; cin >> c;
            if (c == 'P') ans[l] = true;
            flag = false;
            return;
        }
        ans[l] = true;
        return;
    }
    int m = (l + r) / 2;
    for (int i = 0;i < n;i++) {
        if (i < l || i >= m) ask[i] = false;
        else {
            if (ans[i]) ask[i] = false;
            else ask[i] = true;
        }
    }
    if (count(ask, ask + n, 1) == 0) rec(m, r);
    else {
        cout << "Q ";
        string s;
        for (int i = 0;i < n;i++) {
            s += ('0' + ask[i]);
        }
        cout << s;
        char c; cin >> c;
        if (c == 'P') rec(l, m);
        else rec(m, r);
    }
}

void KarginSolve() {
    for (int i = 0;i < n;i++) ans[i] = false;
    flag = true;
    for (int c = 0;c < n;c++) {
        rec(0, n);
        if (!flag) break;
    }
    cout << "A ";
    string s;
    for (int i = 0;i < n;i++) {
        s += ('0' + ask[i]);
    }
    cout << s;
    char c; cin >> c;
    if (c == 'W') exit(0);
}

int main() {
    KarginSet();
    int test = 1;
    cin >> n >> p >> test;
    while (test--) {
        KarginSolve();
    }
    return 0;
}

Compilation message (stderr)

Main.cpp:1:1: warning: multi-line comment [-Wcomment]
    1 | //-------------dilanyan------------\\
      | ^
Main.cpp:8:1: warning: multi-line comment [-Wcomment]
    8 | //------------------Kargpefines--------------------\\
      | ^
Main.cpp:27:1: warning: multi-line comment [-Wcomment]
   27 | //-------------------KarginConstants------------------\\
      | ^
Main.cpp:32:1: warning: multi-line comment [-Wcomment]
   32 | //-------------------KarginCode-----------------------\\
      | ^
Main.cpp: In function 'void KarginSet(std::string)':
Main.cpp:22:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   22 |         freopen((name + ".in").c_str(), "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:23:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   23 |         freopen((name + ".out").c_str(), "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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