Submission #1094536

#	Time	Username	Problem	Language	Result	Execution time	Memory
1094536		I_am_Polish_Girl	Gift Exchange (JOI24_ho_t4)	C++14	0 / 100	2578 ms	6044 KiB

Main

#pragma GCC optimize("Ofast")
#pragma GCC optimize("O3")
#pragma GCC optimization ("unroll-loops")

#include <vector>
#include <algorithm>
#include <map>
#include <set>
#include <unordered_map>
#include <unordered_set>
#include <stack>
#include <queue>
#include <cmath>
#include <random>
#include <chrono>
#include <iomanip>
#include <iostream>
#include <bitset>
#include <cmath>

#define int long long

using namespace std;


int log_ = 3;
int inf = 2000000007000000007;
int mod = 1000000007;

int p = 501;


signed main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);

    int n;
    cin >> n;

    vector <int> a(n);

    for (int i = 0; i < n; i++)
        cin >> a[i];

    vector <int> b(n);

    for (int i = 0; i < n; i++)
        cin >> b[i];

    int q;
    cin >> q;

    while (q--)
    {
        int l, r;
        cin >> l >> r;

        l--;
        r--;

        vector <pair <int, int>> vp;

        for (int i = l; i <= r; i++)
        {
            vp.push_back({ a[i] , b[i]});
        }

        sort(vp.begin(), vp.end());

        int c = 0;
        for (int i = 0; i < vp.size(); i++)
        {
            if (i >= 1)
            {
                if (vp[i - 1].first >= vp[i].second)
                    continue;
            }

            if (i < vp.size() - 1)
            {
                if (vp[i].first >= vp[i+1].second)
                    continue;
            }

            c = 1;
        }

        if (c > 0)
            cout << "No\n";
        else
            cout << "Yes\n";
    }
}

Compilation message (stderr)

Main.cpp:3: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
    3 | #pragma GCC optimization ("unroll-loops")
      | 
Main.cpp: In function 'int main()':
Main.cpp:73:27: 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]
   73 |         for (int i = 0; i < vp.size(); i++)
      |                         ~~^~~~~~~~~~~
Main.cpp:81:19: 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]
   81 |             if (i < vp.size() - 1)
      |                 ~~^~~~~~~~~~~~~~~

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