cmmmc.cpp:20: warning: integer constant is too large for 'long' type cmmmc.cpp: In function 'int main()': cmmmc.cpp:40: warning: comparison between signed and unsigned integer expressions cmmmc.cpp:34: warning: unused variable 'j' cmmmc.cpp:32: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result cmmmc.cpp:33: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result cmmmc.cpp:35: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result cmmmc.cpp:39: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result