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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. int a, b, c;
  6. cin >> a >> b >> c;
  7. cout << (a < b + c && b < a + c && c < a + b ? "YES" : "NO");
  8. return 0;
  9. }
Success #stdin #stdout 0s 15232KB
stdin
1 1 1
stdout
YES