spp.cpp:32:16: warning: missing whitespace after the macro name spp.cpp:33:16: warning: missing whitespace after the macro name spp.cpp: In function 'void read()': spp.cpp:57: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result spp.cpp:58: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result spp.cpp:62: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result spp.cpp:64: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result spp.cpp: In function 'void numerate(int)': spp.cpp:79: warning: comparison between signed and unsigned integer expressions spp.cpp: In function 'void solve()': spp.cpp:123: warning: comparison between signed and unsigned integer expressions spp.cpp:157: warning: comparison between signed and unsigned integer expressions spp.cpp:161: warning: comparison between signed and unsigned integer expressions