http://codeforces.com/contest/31
A
1 #include<bits/stdc++.h> 2 using namespace std; 3 #define lson l,mid,rt<<1 4 #define rson mid+1,r,rt<<1|1 5 #define sqr(x) ((x)*(x)) 6 #define pb push_back 7 #define maxn 1000005 8 typedef long long ll; 9 typedef unsigned long long ull; 10 /*#ifndef ONLINE_JUDGE 11 freopen("1.txt","r",stdin); 12 #endif */ 13 14 int a[105]; 15 16 int main(){ 17 #ifndef ONLINE_JUDGE 18 freopen("1.txt","r",stdin); 19 #endif 20 std::ios::sync_with_stdio(false); 21 int n; 22 cin>>n; 23 for(int i=1;i<=n;i++) cin>>a[i]; 24 for(int i=1;i<=n;i++){ 25 for(int j=1;j<=n;j++){ 26 for(int k=1;k<=n;k++){ 27 if(i!=j&&j!=k){ 28 if(a[i]==a[j]+a[k]){ 29 cout<<i<<" "<<j<<" "<<k<<endl; 30 return 0; 31 } 32 } 33 } 34 } 35 } 36 cout<<-1<<endl; 37 }