Question

Cho dãy số a1,....., an. Với k cho trước. Tìm ai+aj=k

Answer 1

#include <bits/stdc++.h>

using namespace std;

int a[1000],n,i,k,j;

int main()

{

cin>>n>>k;

for (i=1; i<=n; i++) cin>>a[i];

for (i=1; i<=n-1; i++)

for (j=i+1; j<=n; j++)

if ((a[i]+a[j]==k) and (i!=j)) cout<<i<<" "<<j<<endl;

return 0;

}