Compilare: main.cpp: In function 'void FirstSum()': main.cpp:41:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v[1].size();i++) ~^~~~~~~~~~~~ main.cpp:43:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<v[2].size();j++) ~^~~~~~~~~~~~ main.cpp:45:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int l=0;l<v[3].size();l++) ~^~~~~~~~~~~~ main.cpp: In function 'void SecondSum()': main.cpp:56:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v[4].size();i++) ~^~~~~~~~~~~~ main.cpp:58:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<v[5].size();j++) ~^~~~~~~~~~~~ main.cpp: In function 'void Sol()': main.cpp:69:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<A.size();i++) ~^~~~~~~~~ main.cpp:90:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=sol;j<B.size();j++) ~^~~~~~~~~