Compilare: main.cpp: In function 'int main()': main.cpp:50:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int h = 0; h < g[x].size(); h++) { ~~^~~~~~~~~~~~~ main.cpp:70:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int h = 0; h < g[x].size(); h++) { ~~^~~~~~~~~~~~~ main.cpp:77:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int h = 0; h < g[y].size(); h++) { ~~^~~~~~~~~~~~~