Compilare: main.cpp: In function 'int main()': main.cpp:137:18: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::vector<long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 137 | for(int i=0;i<comp.size();i++) | ~^~~~~~~~~~~~ main.cpp:173:18: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::vector<long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 173 | for(int i=0;i<comp.size();i++) | ~^~~~~~~~~~~~ main.cpp:177:22: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 177 | for(int k=0;k<comp[i].size()-1;k++) | ~^~~~~~~~~~~~~~~~~ main.cpp:181:28: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 181 | for(int j=k+1;j<comp[i].size()-1;j++) | ~^~~~~~~~~~~~~~~~~ main.cpp:176:26: warning: unused variable 'x1' [-Wunused-variable] 176 | int mn=LLONG_MAX,x1,y1; | ^~ main.cpp:176:29: warning: unused variable 'y1' [-Wunused-variable] 176 | int mn=LLONG_MAX,x1,y1; | ^~