Submission #1271924

#	Time	Username	Problem	Language	Result	Execution time	Memory
1271924		uranhishig	Count Squares (CEOI19_countsquares)	C++20	7 / 100	71 ms	8744 KiB

countsquares

#include <bits/stdc++.h>
using namespace std;

#define int long long
#define pii pair<int,int>
#define ff first
#define ss second
#define rep(i,n) for (int i = 0; i < n; i++)



signed main() {
    
    int n, m, ans=0;
    cin >> n >> m;
    vector<int> a(n);
    vector<int> b(m);
    rep(i,n){
        cin>>a[i];
    }
    rep(i,m){
        cin>>b[i];
    }
    set<int>s;
    for(int i=0;i<n;i++){
        for(int j=i+1;j<n;j++){
            s.insert(a[j]-a[i]);
        }
    }
    for(int i=0;i<m;i++){
        for(int j=i+1;j<m;j++){
            if(s.find(b[j]-b[i]) != s.end()) {
                ans++;
            }
        }
    }
    cout<<ans;
    return 0;
}

• Subtask 1: 7 / 7
• Subtask 2: 0 / 40
• Subtask 3: 0 / 53