Compilare: user.cpp:2:81: warning: ISO C++ forbids declaration of ‘main’ with no type [-Wreturn-type] std::ifstream f("branza.in");long long n,s,t,v[1<<17],d[1<<17],p=1,q,c,r,i;main(){f>>n>>s>>t;while(n-i++){f>>v[i]>>c;for(;s*(i-d[q])+v[d[q]]>v[i]&&p<=q;--q);d[++q]=i;if(i-d[p]>t)++p;r+=c*(s*(i-d[p])+v[d[p]]);}std::ofstream("branza.out")<<r;} ^