Submission #996359

#	Time	Username	Problem	Language	Result	Execution time	Memory
996359		vladilius	Gift Exchange (JOI24_ho_t4)	C++17	0 / 100	2571 ms	6272 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>

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];
    int q; cin>>q;
    while (q--){
        int l, r; cin>>l>>r;
        vector<int> x;
        set<pii> st;
        for (int i = l; i <= r; i++){
            x.pb(i);
            st.ins({a[i], i});
        }
        auto cmp = [&](int i, int j){
            return b[i] > b[j];
        };
        sort(x.begin(), x.end(), cmp);
        bool ind = 1;
        for (int i: x){
            auto it = st.find({a[i], i});
            bool k = (it != st.end());
            if (k) st.erase(it);
            it = st.lower_bound({b[i], 0});
            if (it == st.end()){
                ind = 0;
                break;
            }
            st.erase(it);
            if (k) st.ins({a[i], i});
        }
        cout<<((ind) ? "Yes" : "No")<<"\n";
    }
}

• 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