Compilare: main.cpp: In function 'int main()': main.cpp:42:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while ((ii < v[i].size() || jj < v[j].size()) && next <= mcjolle && ok == 0) ~~~^~~~~~~~~~~~~ main.cpp:42:52: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while ((ii < v[i].size() || jj < v[j].size()) && next <= mcjolle && ok == 0) ~~~^~~~~~~~~~~~~ main.cpp:45:57: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (v[i][ii].x <= next && ii < v[i].size()) ~~~^~~~~~~~~~~~~ main.cpp:50:57: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (v[j][jj].x <= next && jj < v[j].size()) ~~~^~~~~~~~~~~~~