Compilare: main.cpp: In function 'void rez1()': main.cpp:58:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v[1].size();i++) ~^~~~~~~~~~~~ main.cpp:67:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<v[z.y].size();j++) ~^~~~~~~~~~~~~~ main.cpp: In function 'void rez2()': main.cpp:77:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v[1].size();i++) ~^~~~~~~~~~~~ main.cpp:91:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<v[z.y].size();j++) ~^~~~~~~~~~~~~~ main.cpp: In function 'void rez3()': main.cpp:101:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v[1].size();i++) ~^~~~~~~~~~~~ main.cpp:111:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<v[z.y].size();j++) ~^~~~~~~~~~~~~~