제출 #1318504

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1318504		Ghulam_Junaid	Trampoline (info1cup20_trampoline)	C++20	73 / 100	2105 ms	355088 KiB

trampoline

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

const int N = 2e5 + 10, SQ = 450;
int n, m, g, q;
int par[N][SQ];
vector<pair<int, int>> vec;

int main(){
    cin >> n >> m >> g;
    for (int i = 0; i < g; i ++){
        int x, y;
        cin >> x >> y;
        vec.push_back({x, y});
    }
    sort(vec.begin(), vec.end());

    for (int i = 0; i < g; i ++){
        auto [x, y] = vec[i];
        x++;

        par[i][0] = i;
        int lb = lower_bound(vec.begin(), vec.end(), (pair<int, int>){x, y}) - vec.begin();
        if (lb != vec.size() and vec[lb].first == x)
            par[i][0] = lb;
    }

    for (int i = g - 1; i >= 0; i--)
        for (int j = 1; j < SQ; j ++)
            par[i][j] = par[par[i][j - 1]][0];

    cin >> q;
    while (q--){
        int sx, sy, ex, ey;
        cin >> sx >> sy >> ex >> ey;

        int f = 0;
        int cur = -1;
        while (sx < ex){
            if (f == 1){
                if (par[cur][SQ - 1] == cur) break;
                if (vec[par[cur][SQ - 1]].first < ex){
                    cur = par[cur][SQ - 1];
                }
                else{
                    cur = par[cur][ex - sx - 1];
                }
                sx = vec[cur].first + 1, sy = vec[cur].second;
                continue;
            }

            if (f==0) f = 1;
            int lb = lower_bound(vec.begin(), vec.end(), (pair<int, int>){sx, sy}) - vec.begin();
            if (lb != vec.size() and vec[lb].first == sx)
                sy = vec[lb].second;
            else break;
            cur = lb;
            sx++;
        }
        if (sx == ex and sy <= ey)
            cout << "Yes\n";
        else
            cout << "No\n";
    }
}

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