func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int arr[4];     int t = 0;     int s = 0;     for (int i = 0; i < 4; i++) cin >> arr[i];     for (int m = 0; m < 4; m++) {       for (int j = 0; j < 4; j++) {         for (int k = 0; k < 4; k++) {           if (arr[m] < arr[j] + arr[k] && arr[j] < arr[m] + arr[k] &&               arr[k] < arr[m] + arr[j] && m != j && j != k && k != m) {             t += 1;           } else if (arr[m] == arr[j] + arr[k] && m != j && j != k && k != m) {             s += 1;           }         }       }     }     if (t == 0 && s != 0)       cout <<  SEGMENT ;     else if (t != 0)       cout <<  TRIANGLE ;     else if (t == 0 && s == 0)       cout <<  IMPOSSIBLE ;     return 0;   }   