Submission #1362020

#	Time	Username	Problem	Language	Result	Execution time	Memory
1362020		SulA	Inside information (BOI21_servers)	C++20	5 / 100	119 ms	1428 KiB

servers

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

const int N = 120'001;
int tim[N];

int main() {
    int n,k; cin >> n >> k;
    int z = 0;
    tim[1] = 676767676;
    for (int _ = 0; _ < n+k-1; _++) {
        char t;
        int a,b; cin >> t;
        if (t == 'S') {
            cin >> a >> b;
            if (b == 1) swap(a, b);
            tim[b] = ++z;
        } else if (t == 'Q') {
            cin >> a >> b;
            if (min(a, b) == 1)
                cout << (tim[max(a, b)] > 0 ? "yes" : "no");
            else
                cout << (a == b || 0 < tim[b] && tim[b] < tim[a] ? "yes" : "no");
            cout << "\n";
        } else {
            cin >> b;
            if (b == 1) cout << z+1 << "\n";
            else cout << (tim[b] == 0 ? 1 : 2 + z - tim[b]) << "\n";
        }
    }
}

• Subtask 1-1: 0 / 2
• Subtask 1-2: 0 / 3
• Subtask 2-1: 2 / 2
• Subtask 2-2: 3 / 3
• Subtask 3-1: 0 / 5
• Subtask 3-2: 0 / 5
• Subtask 4-1: 0 / 10
• Subtask 4-2: 0 / 10
• Subtask 5-1: 0 / 12
• Subtask 5-2: 0 / 13
• Subtask 6-1: 0 / 17
• Subtask 6-2: 0 / 18