Eroare de compilare: main.cpp: In function 'std::vector<int> rank_cats(std::vector<int>, std::vector<int>, std::vector<int>)': main.cpp:24:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 24 | for(int i=0;i<A.size();i++) | ~^~~~~~~~~ main.cpp:26:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 26 | for(int i=0;i<B.size();i++) | ~^~~~~~~~~ main.cpp:28:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 28 | for(int i=0;i<C.size();i++) | ~^~~~~~~~~ main.cpp:40:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 40 | for(int i=0;i<a.size();i++) | ~^~~~~~~~~ /usr/bin/ld: /usr/lib/gcc/x86_64-pc-linux-gnu/12.2.1/../../../../lib/crt1.o: in function `_start': /build/glibc/src/glibc/csu/../sysdeps/x86_64/start.S:103: undefined reference to `main' collect2: error: ld returned 1 exit status Non zero exit status: 1