Compilare: main.cpp: In function 'int main()': main.cpp:93:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 93 | for(int i=0; i<camere.size(); i++) | ~^~~~~~~~~~~~~~ main.cpp:111:42: warning: 'yff' may be used uninitialized [-Wmaybe-uninitialized] 111 | out<<xs<<" "<<ys<<" "<<xff<<" "<<yff; | ^~~ main.cpp:89:38: note: 'yff' was declared here 89 | int arie,maxim=0,xs,ys,xf,yf,xff,yff; | ^~~ main.cpp:111:37: warning: 'xff' may be used uninitialized [-Wmaybe-uninitialized] 111 | out<<xs<<" "<<ys<<" "<<xff<<" "<<yff; | ^~~ main.cpp:89:34: note: 'xff' was declared here 89 | int arie,maxim=0,xs,ys,xf,yf,xff,yff; | ^~~ main.cpp:111:27: warning: 'ys' may be used uninitialized [-Wmaybe-uninitialized] 111 | out<<xs<<" "<<ys<<" "<<xff<<" "<<yff; | ^~~ main.cpp:89:25: note: 'ys' was declared here 89 | int arie,maxim=0,xs,ys,xf,yf,xff,yff; | ^~ main.cpp:111:18: warning: 'xs' may be used uninitialized [-Wmaybe-uninitialized] 111 | out<<xs<<" "<<ys<<" "<<xff<<" "<<yff; | ^~~ main.cpp:89:22: note: 'xs' was declared here 89 | int arie,maxim=0,xs,ys,xf,yf,xff,yff; | ^~