Compilare: main.cpp: In function 'bool exista_dreptunghi(int)': main.cpp:142:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<a.size(); i++) ~^~~~~~~~~ main.cpp:144:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<b.size(); j++) ~^~~~~~~~~ main.cpp:154:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<a.size() && !gasit; i++) ~^~~~~~~~~ main.cpp:162:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<a.size(); i++) ~^~~~~~~~~ main.cpp:166:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<b.size(); i++) ~^~~~~~~~~ main.cpp: In function 'int ReadInt()': main.cpp:32:40: 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:43:40: 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:174:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("robotics.in","r",stdin); ^ main.cpp:175:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("robotics.out","w",stdout); ^