goe.cpp: In function 'int main()': goe.cpp:168: warning: format '%lld' expects type 'long long int', but argument 2 has type 'int' goe.cpp:24: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result goe.cpp:25: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result goe.cpp:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result goe.cpp:39: warning: 'cop' may be used uninitialized in this function goe.cpp:138: warning: 'u1' may be used uninitialized in this function