Submission #1231742

#	Time	Username	Problem	Language	Result	Execution time	Memory
1231742		khome	Trampoline (info1cup20_trampoline)	C++20	0 / 100	79 ms	49472 KiB

trampoline

#include <bits/stdc++.h>

using namespace std;
#define int long long

const int inf = 1e9;

void solve(){
    int r, c, n; cin >> r >> c >> n;
    vector<vector<int>> rc(r + 1, vector<int>(c + 1, -1));

    for (int i = 0; i < n;i ++) {
        int x, y; cin >> x >> y;
        for (int j = y; j >= 0; j--) {
            if (rc[x][j] != -1) break;
            rc[x][j] = y;
        }
    }

    auto check = [&](int a, int b, int p, int q) -> bool {

        while (rc[a][b] != -1) {
            if (a == p) break;

            a ++;
            b = rc[a][b];

        }
        if (a == p && b <= q) return true;
        return false;
    };

    int t; cin >> t;
    for (int i = 0; i < t; i++) {
        int x, y, u, w; cin >> x >> y >> u >> w;
        if (check(x, y, u, w)) cout << "Yes" << endl;
        else cout << "No" << endl;
    }
}

signed main(){
    cin.tie(0) -> sync_with_stdio(0);
    int t = 1;
    // cin >> t;
    while (t--)solve();
}

• Subtask 1: 0 / 23
• Subtask 2: 0 / 20
• Subtask 3: 0 / 11
• Subtask 4: 0 / 19
• Subtask 5: 0 / 27