Submission #260371

#	Time	Username	Problem	Language	Result	Execution time	Memory
260371		stefantaga	Count Squares (CEOI19_countsquares)	C++11	100 / 100	2240 ms	106036 KiB

countsquares

#include <bits/stdc++.h>

using namespace std;
int inalt[1505],oriz[1505];
int i,j,n,m1,val;
map <int,int> m2;
long long p;
int main()
{
    ios_base :: sync_with_stdio(false);
    cin.tie(0);
    cin>>n>>m1;
    for (i=1;i<=n;i++)
    {
        cin>>inalt[i];
    }
    for (j=1;j<=m1;j++)
    {
        cin>>oriz[j];
    }

    for (i=1;i<=m1;i++)
    {
        for (j=i+1;j<=m1;j++)
        {
            m2[oriz[j]-oriz[i]]++;
        }
    }
    p=0;
    for (i=1;i<=n;i++)
    {
       for (j=i+1;j<=n;j++)
        {
            val=inalt[j]-inalt[i];
            p=p+m2[val];
        }
    }
    cout<<p;
    return 0;
}

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