Compilare: main.cpp: In function 'int main()': main.cpp:25:24: warning: comparison of integer expressions of different signedness: 'std::map<int, int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 25 | while(m1.size()>u) | ~~~~~~~~~^~ main.cpp:32:24: warning: comparison of integer expressions of different signedness: 'std::map<int, int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 32 | while(m2.size()>=l) | ~~~~~~~~~^~~ main.cpp:22:13: warning: unused variable 'd' [-Wunused-variable] 22 | int s=0,d=0, cntU=0, cntL=0; | ^