Compilare: main.cpp: In function 'int main()': main.cpp:82:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v.size(); ++i){ ~~^~~~~~~~~~ main.cpp:95:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < b.size(); ++i){ ~~^~~~~~~~~~ main.cpp:100:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v.size(); ++i){ ~~^~~~~~~~~~ main.cpp:101:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < b.size(); ++j){ ~~^~~~~~~~~~ main.cpp:136:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v.size(); ++i){ ~~^~~~~~~~~~ main.cpp:164:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v.size(); ++i){ ~~^~~~~~~~~~ main.cpp:165:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < b.size(); ++j){ ~~^~~~~~~~~~ main.cpp:172:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < b.size(); ++i){ ~~^~~~~~~~~~