Compilare: user.cpp: In function ‘void make_sol(long long int*, int)’: user.cpp:45:26: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if ( s[i] == 'W' && s[i + step] == 'W' || s[i] == 'E' && s[i + step] == 'E' ) { ^ user.cpp: In function ‘int main()’: user.cpp:55:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("weeee.in", "r", stdin); ^ user.cpp:56:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("weeee.out", "w", stdout); ^ user.cpp:58:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%s", &N, s + 1); ^