Compilare: main.cpp: In function 'int main()': main.cpp:47:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < romeo.size(); i++) { ~~^~~~~~~~~~~~~~ main.cpp:66:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < julieta.size(); i++) { ~~^~~~~~~~~~~~~~~~ main.cpp:130:17: warning: unused variable 'diff' [-Wunused-variable] int diff, x,y; ^~~~ main.cpp:146:49: warning: 'minY' may be used uninitialized in this function [-Wmaybe-uninitialized] out << minDist << " " << minX << " " << minY; ^ main.cpp:146:38: warning: 'minX' may be used uninitialized in this function [-Wmaybe-uninitialized] out << minDist << " " << minX << " " << minY; ^~~