Compilare: user.cpp: In function ‘void getPow(int*, long long int)’: user.cpp:35:59: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0, k = pw % v.size(); j < v.size(); j ++, k = (k + 1) % v.size()) ^ user.cpp: In function ‘int main()’: user.cpp:62:42: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("hideandseek.in", "r", stdin); ^ user.cpp:63:44: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("hideandseek.out", "w", stdout); ^ user.cpp:65:38: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%i %lld %lld", &n, &x, &y); ^ user.cpp:66:54: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for (int i = 1; i <= n; ++ i) scanf("%i", &p1[i]); ^ user.cpp:67:54: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for (int i = 1; i <= n; ++ i) scanf("%i", &p2[i]); ^