Compilare: user.cpp: In function ‘int main()’: user.cpp:17:15: warning: unused variable ‘tin’ [-Wunused-variable] long long tin=start; ^ user.cpp:8:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("taste.in", "r", stdin); ^ user.cpp:9:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("taste.out", "w", stdout); ^ user.cpp:24:19: warning: ‘kkk’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(m+kk<mm+kkk || mm==0) ^