Compilare: main.cpp: In function 'int main()': main.cpp:181:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<vec.size(); i++) ~^~~~~~~~~~~ main.cpp:193:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<vec.size(); i++) ~^~~~~~~~~~~ main.cpp:200:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<vec.size(); i++) ~^~~~~~~~~~~ main.cpp:201:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=i+1; j<vec.size(); j++) ~^~~~~~~~~~~ main.cpp:203:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<vec.size(); i++) ~^~~~~~~~~~~