func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int a[4];     for (int i = 0; i < 4; i++) cin >> a[i];     sort(a, a + 4);     for (int i = 0; i < 2; i++)       if (a[i] + a[i + 1] > a[i + 2]) return 0 * printf( TRIANGLE );     for (int i = 0; i < 2; i++)       if (a[i] + a[i + 1] == a[i + 2]) return 0 * printf( SEGMENT );     return 0 * printf( IMPOSSIBLE );   }   