Submission #1119603

#	Time	Username	Problem	Language	Result	Execution time	Memory
1119603		vjudge1	Count Squares (CEOI19_countsquares)	C++17	47 / 100	1698 ms	141136 KiB

countsquares

#include <bits/stdc++.h>
#define int long long
#define pb push_back
#define io ios_base::sync_with_stdio(0),cin.tie(0);
#define str string
#define db double
using namespace std;
const int maxn=1e6+2;
int t, n , a[maxn] , que , m ,aa[103][103],b,sum , y[maxn] , x[maxn];
int ioioioio(){
	map <int , int > yy , xx;
	for(int i = 1 ; i <= n ; i++){
		for(int j = i + 1;  j <= m; j++){
			yy[y[j] - y[i]]++;
		}
	}
	for(int i = 1 ; i <= m ; i++){
		for(int j = i + 1 ; j <= m ; j++){
			xx[x[j] - x[i]]++;
		}
	}
	for(auto i : yy){
		if(xx.count(i.first)){
			sum += i.second * xx[i.first];
		}
	}
	return sum ;
}
signed main() {
    io;
	cin >> n >> m;
	for(int i = 1; i  <= n ; i++){
		cin >> x[i];
	}
	for(int i = 1 ; i <= m ; i++){
		cin >> y[i];
	}
	cout << ioioioio();
}
///////////

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