Submission #1178298

#	Time	Username	Problem	Language	Result	Execution time	Memory
1178298		biank	Gift Exchange (JOI24_ho_t4)	C++20	50 / 100	2595 ms	4164 KiB

Main

#include <bits/stdc++.h>

using namespace std;

#define forn(i,n) for(int i=0;i<int(n);i++)
#define forsn(i,s,n) for(int i=int(s);i<int(n);i++)
#define dforn(i,n) for(int i=int(n)-1;i>=0;i--)
#define dforsn(i,s,n) for(int i=int(n)-1;i>=int(s);i--)
#define fst first
#define snd second
#define pb push_back
#define eb emplace_back
#define sz(x) (int)x.size()
#define all(x) x.begin(), x.end()

typedef long long ll;
typedef vector<ll> vll;
typedef vector<int> vi;
typedef pair<int,int> ii;

int main(){
    ios::sync_with_stdio(0);
    cin.tie(0);
    
    int n;
    cin>>n;
    vector<int> a(n),b(n);
    forn(i,n){
        cin>>a[i];
        --a[i];
    }
    forn(i,n){
        cin>>b[i];
        --b[i];
    }
    int k;
    cin>>k;
    forn(_,k){
        int l,r;
        cin>>l>>r;
        --l,--r;
        vector<ii> A,B;
        forsn(i,l,r+1){
            A.eb(a[i],i);
            B.eb(b[i],i);
        }
        sort(all(A));
        sort(all(B));
        forn(i,sz(A)) if(A[i].snd==B[i].snd){
            if(i>0&&B[i].fst<A[i-1].fst) swap(B[i-1],B[i]);
            else if(i+1<sz(B)&&B[i].fst<A[i+1].fst) swap(B[i+1],B[i]);
        }
        bool flag=true;
        forn(i,sz(A)) flag&=A[i].fst>B[i].fst&&A[i].snd!=B[i].snd;
        if(flag) cout<<"Yes\n";
        else cout<<"No\n";
    }
    
    return 0;
}

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