Compilare: main.cpp: In function 'bool inplus(int)': main.cpp:49:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<dsc[index].size();i++) ~^~~~~~~~~~~~~~~~~~ main.cpp:51:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(j<descM.size()&&descM[j].first<dsc[index][i].first) ~^~~~~~~~~~~~~ main.cpp:53:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(j<descM.size()&&descM[j].first!=dsc[index][i].first) ~^~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:87:14: warning: variable 'i' set but not used [-Wunused-but-set-variable] for(auto i:descM) ^ main.cpp:101:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k=0;k<descM.size();k++) ~^~~~~~~~~~~~~ main.cpp:104:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(j<dsc[i].size()&&dsc[i][j].first<descM[k].first) ~^~~~~~~~~~~~~~ main.cpp:106:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(j<dsc[i].size()&&dsc[i][j].first==descM[k].first) ~^~~~~~~~~~~~~~ main.cpp:103:18: warning: unused variable 'found' [-Wunused-variable] bool found=0; ^~~~~