Compilare: main.cpp:7:0: warning: ignoring #pragma optimize GCC [-Wunknown-pragmas] #pragma optimize GCC ("03") main.cpp: In function 'void cautbin_sol(long long unsigned int, long long unsigned int, long long unsigned int, long long unsigned int)': main.cpp:135:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(long long i=1;i<=e1;i++){ ~^~~~ main.cpp:138:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(long long i=1;i<=e2;i++){ ~^~~~ main.cpp: In function 'int main()': main.cpp:157:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("bonus.out","w",stdout); ^ main.cpp:161:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lld",&n); ^ main.cpp: In member function 'char InParser::read_ch()': main.cpp:19:29: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buff, 1, 4096, fin); ^