Compilare: main.cpp: In function 'int main()': main.cpp:13:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=n;i++) ~^~~ main.cpp:15:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(d.front()<i-t) ~~~~~~~~~^~~~ main.cpp:18:53: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(!d.empty()&&c[d.back()]+s*(i-d.back())>=c[i]) ~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~