func_code_string: #include <bits/stdc++.h>   using namespace std;   char str[100010];   int main() {     int ans[] = {4, 0, 0, 0};     while (~scanf( %s , str)) {       int tmp = 0;       int len = strlen(str);       for (int i = 0; i < len; ++i) {         tmp = tmp * 10 + str[i] -  0 ;         tmp %= 4;       }       printf( %d n , ans[tmp]);     }     return 0;   }   