Submission #1240619

#	Time	Username	Problem	Language	Result	Execution time	Memory
1240619		KindaGoodGames	From Hacks to Snitches (BOI21_watchmen)	C++20	0 / 100	1 ms	836 KiB

watchmen

#include<bits/stdc++.h>

using namespace std;

#define bs bitset<4000>

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int n, q;
    cin >> n >> q;

    vector<bs> obtained(n);
    vector<bs> available(n);

    for(int i = 0; i < n; i++){
        obtained[i][i] = true;
        available[i][i] = true;
    }
    

    for(int t = 0; t < n+q-1; t++){
        char m;
        cin >> m;

        if(m == 'S'){
            int a,b;
            cin >> a >> b;
            a--;b--;
            obtained[a] |= obtained[b];
            obtained[b] = obtained[a];
        }
        if(m == 'Q'){
            int a,d;
            cin >> a >>d;
            a--;d--;
            if(obtained[a][d]){
                cout << "yes\n";
            }else{
                cout << "no\n";
            }
        }
    }
}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 10
• Subtask 3: 0 / 10
• Subtask 4: 0 / 10
• Subtask 5: 0 / 25
• Subtask 6: 0 / 20
• Subtask 7: 0 / 20