Compilare: main.cpp: In function 'int main()': main.cpp:75:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<div.size(); j++) { ~^~~~~~~~~~~ main.cpp:78:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<div.size(); j++) { ~^~~~~~~~~~~ main.cpp:86:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<div.size(); j++) { ~^~~~~~~~~~~