Compilare: main.cpp: In function 'int ReadInt(int&)': main.cpp:39:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ main.cpp:18:40: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buffer,1,bsize,stdin); ^ main.cpp:31:40: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buffer,1,bsize,stdin); ^ main.cpp: In function 'int main()': main.cpp:130:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("tricolor.in","r",stdin); ^ main.cpp:131:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("tricolor.out","w",stdout); ^