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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main(){
  5. 	int n,s,x;	cin >> n >> s;
  6. 	map<int,int> m;
  7. 	vector<int> v(n);
  8. 	for(int i=1;i<=n;i++)	cin >> v[i-1];
  9. 	for(int i=1;i<=n;i++){
  10. 		int need = s - v[i-1];
  11. 		if(m.find(need) != m.end()){
  12. 			cout << m[need] << " " << i;
  13. 			return 0;
  14. 		}
  15. 		m[v[i-1]] = i;
  16. 	}
  17. 	cout << "IMPOSSIBLE";
  18. 	return 0;
  19. }
Success #stdin #stdout 0s 5284KB
comments (?)
stdin
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4 8
2 7 5 6
stdout
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1 4
https://ideone.com/0dgD3g
language:
C++14 (clang 8.0)
created:
2 days ago
visibility:
public

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