Submission #1095946

#	Time	Username	Problem	Language	Result	Execution time	Memory
1095946		vladilius	Gift Exchange (JOI24_ho_t4)	C++17	9 / 100	2592 ms	5328 KiB

Main

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using pii = pair<int, int>;
#define pb push_back
#define ff first
#define ss second
#define ins insert
#define arr3 array<int, 3>
const int inf = 1e9;

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    int n; cin>>n;
    vector<int> a(n + 1), b(n + 1);
    for (int i = 1; i <= n; i++) cin>>a[i];
    for (int i = 1; i <= n; i++) cin>>b[i];
    
    auto f = [&](int l, int r){
        vector<arr3> all;
        for (int i = l; i <= r; i++){
            all.pb({b[i], a[i], i});
        }
        sort(all.begin(), all.end());
        
        vector<pii> st;
        for (int i = 0; i < all.size(); i++){
            st.pb({all[i][1], i});
        }
        for (int i = (int) all.size() - 1; i >= 0; i--){
            int mn = n;
            for (auto [x, j]: st){
                if (j == i) continue;
                if (x >= all[i][0]){
                    mn = min(mn, j);
                }
            }
            if (mn == n) return 0;
            int j = (int) (find(st.begin(), st.end(), make_pair(all[mn][1], mn)) - st.begin());
            st.erase(st.begin() + j);
        }
        
        return 1;
    };
        
    int q; cin>>q;
    while (q--){
        int l, r; cin>>l>>r;
        cout<<(f(l, r) ? "Yes" : "No")<<"\n";
    }
}

Compilation message (stderr)

Main.cpp: In lambda function:
Main.cpp:30:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::array<int, 3> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   30 |         for (int i = 0; i < all.size(); i++){
      |                         ~~^~~~~~~~~~~~

• Subtask 1: 4 / 4
• Subtask 2: 5 / 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