Submission #1011554

#	Time	Username	Problem	Language	Result	Execution time	Memory
1011554		victor_gao	Gift Exchange (JOI24_ho_t4)	C++17	10 / 100	2567 ms	5872 KiB

Main

//#pragma GCC optimize("Ofast,unroll-loops,O3")
//#pragma GCC target("avx,avx2,sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,fma,tune=native")
#include <bits/stdc++.h>
#define int long long
#define pii pair<int, int>
#define x first
#define y second
#define N 500015
using namespace std;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
int n, q;
pii arr[N];
signed main(){
    ios::sync_with_stdio(0);
    cin.tie(0);
    cin >> n;
    for (int i = 1; i <= n; i++)
        cin >> arr[i].x;
    for (int i = 1; i <= n; i++)
        cin >> arr[i].y;
    cin >> q;
    for (int t = 0; t < q; t++){
        int l, r; cin >> l >> r;
        vector<pii> vt;
        for (int i = l; i <= r; i++)
            vt.push_back(arr[i]);
        sort(vt.begin(), vt.end());
        int j = 1, ans = 1;
        for (int i = 0; i < (int)vt.size() - 1; i++){
            if (i == j)
                j++;
            while (j < vt.size() && vt[j].y > vt[i].x)
                j++;
            if (j >= vt.size())
                ans = 0;
        }
        cout << (ans ? "Yes\n" : "No\n");
    }
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:32:22: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   32 |             while (j < vt.size() && vt[j].y > vt[i].x)
      |                    ~~^~~~~~~~~~~
Main.cpp:34:19: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   34 |             if (j >= vt.size())
      |                 ~~^~~~~~~~~~~~

• Subtask 1: 0 / 4
• Subtask 2: 0 / 5
• Subtask 3: 10 / 10
• Subtask 4: 0 / 31
• Subtask 5: 0 / 8
• Subtask 6: 0 / 12
• Subtask 7: 0 / 18
• Subtask 8: 0 / 12