Compilare: main.cpp: In function 'int main()': main.cpp:70:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<normm.size();i++) ~^~~~~~~~~~~~~ main.cpp:88:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<q[i].size();j++) ~^~~~~~~~~~~~ main.cpp:91:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(c<q[i-1].size() && (q[i-1][c].x<q[i][j].x or (q[i-1][c].x==q[i][j].x && q[i-1][c].y<q[i][j].y))) ~^~~~~~~~~~~~~~ main.cpp:58:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("bazar.in","r",stdin); ^ main.cpp:59:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("bazar.out","w",stdout); ^ main.cpp:60:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ main.cpp:63:38: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&v[i].x,&v[i].y); ^