Compilare: main.cpp: In function 'int main()': main.cpp:45:10: warning: suggest parentheses around '&&' within '||' [-Wparentheses] if(a>b && yg<=ypr || a<b && yg>ypr) swap(a,b); ~~~~^~~~~~~~~~ main.cpp:67:9: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i<o.size() && j<v.size()) ~^~~~~~~~~ main.cpp:67:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i<o.size() && j<v.size()) ~^~~~~~~~~