Compilare: user.cpp: In function ‘void pre()’: user.cpp:52:28: warning: unused variable ‘k1’ [-Wunused-variable] int mvs, t, last, bon, k1, k2; ^ user.cpp:52:32: warning: unused variable ‘k2’ [-Wunused-variable] int mvs, t, last, bon, k1, k2; ^ user.cpp: In function ‘int main()’: user.cpp:200:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("piruete.in", "r", stdin); ^ user.cpp:201:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("piruete.out", "w", stdout); ^ user.cpp:203:32: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &T, &n, &k); T /= 2; ^