func_code_string: #include <bits/stdc++.h>   int main() {     int life[200001], N, a, i;     for (i = 0; i < 200001; i++) life[i] = 0;     scanf( %d , &N);     for (i = 0; i < N; i++) {       scanf( %d , &a);       if (a != 0) life[a + 100000] = 1;     }     int diff = 0;     for (i = 0; i < 200001; i++) diff += life[i];     printf( %d n , diff);     return 0;   }   