Compilare: main.cpp: In function 'int main()': main.cpp:15:24: warning: format '%s' expects argument of type 'char*', but argument 3 has type 'char (*)[1048576]' [-Wformat=] scanf("%d %s", &n, &s); ^ main.cpp:23:54: warning: suggest parentheses around comparison in operand of '^' [-Wparentheses] if (one ^ (__builtin_popcount(i & mask) % 2) != vals[i]) { ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~ main.cpp:13:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("heist.in", "r", stdin); ^ main.cpp:14:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("heist.out", "w", stdout); ^ main.cpp:15:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %s", &n, &s); ^