Compilare: main.cpp: In function 'void solve(int)': main.cpp:54:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( i = 1 ; i <= segmr.size () ; ++ i ) ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:170:26: warning: 'y' may be used uninitialized in this function [-Wmaybe-uninitialized] out << x << ' ' << y ; ^ main.cpp:170:17: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized] out << x << ' ' << y ; ^~~