Compilare: main.cpp: In function 'int main()': main.cpp:23:14: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 23 | for(i=1;i<im.size();i++) | ~^~~~~~~~~~ main.cpp: In lambda function: main.cpp:32:22: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::pair<std::pair<long long int, long long int>, std::pair<long long int, long long int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 32 | for(i=0;i<ans.size();i++)cout<<ans[i]<<'\n'; | ~^~~~~~~~~~~ main.cpp:36:21: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 36 | for(ll i=1;i<im.size();i++) | ~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:19:10: warning: unused variable 'b' [-Wunused-variable] 19 | ll a,b,c,d,n,m,i,j,k,l; | ^ main.cpp:19:12: warning: unused variable 'c' [-Wunused-variable] 19 | ll a,b,c,d,n,m,i,j,k,l; | ^ main.cpp:19:14: warning: unused variable 'd' [-Wunused-variable] 19 | ll a,b,c,d,n,m,i,j,k,l; | ^ main.cpp:19:22: warning: unused variable 'j' [-Wunused-variable] 19 | ll a,b,c,d,n,m,i,j,k,l; | ^ main.cpp:19:24: warning: unused variable 'k' [-Wunused-variable] 19 | ll a,b,c,d,n,m,i,j,k,l; | ^ main.cpp:19:26: warning: unused variable 'l' [-Wunused-variable] 19 | ll a,b,c,d,n,m,i,j,k,l; | ^