Submission #525525

#	Time	Username	Problem	Language	Result	Execution time	Memory
525525		Farhan_HY	Trampoline (info1cup20_trampoline)	C++14	23 / 100	2070 ms	21280 KiB

trampoline

#include <bits/stdc++.h>
#define int long long
#define float double
#define pb push_back
#define F first
#define S second
#define T int t; cin >> t; while(t--)
#define IOS ios::sync_with_stdio(); cin.tie(0); cout.tie(0);

using namespace std;

const int inf = 8e18;
const int N = 1e6 + 6;
const int M = 1e3 + 3;
const int mod = 1e9 + 7;
const float pi = atan(1) * 4;
int r, c, n;
map<int, set<int>> tramps;

main()
{
    cin >> r >> c >> n;
    for(int i = 0; i < n; i++)
    {
        int y, x;
        cin >> y >> x;
        tramps[y].insert(x);
    }
    T
    {
        int x1, x2, y1, y2;
        cin >> y1 >> x1 >> y2 >> x2;
        int last = y1;
        for(auto x: tramps)
        {
            if (x.F < y1)
                continue;
            if (x.F - last > 1)
            {
                y1 = -1;
                break;
            }
            if (y1 == y2)
                break;
            if (tramps[y1].end() == tramps[y1].lower_bound(x1))
                break;
            x1 = *tramps[y1].lower_bound(x1);
            y1 = x.F + 1;
            last = x.F;
            if (x1 > x2)
            {
                y1 = -1;
                break;
            }
        }
        if (y1 == y2)
            cout << "Yes\n";
        else
            cout << "No\n";
    }
}
/*
4 5 2
2 2
3 4
3
2 1 4 5
1 2 1 4
2 3 4 4
*/

Compilation message (stderr)

trampoline.cpp:20:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   20 | main()
      | ^~~~

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