Compilare: user.cpp:3:20: warning: ISO C++ forbids declaration of ‘main’ with no type [-Wreturn-type] int d[N],v[N];main(){std::ifstream fin("branza.in");std::ofstream fout("branza.out");long long n,s,p,t,st=0,dr=-1,S=0,i;fin>>n>>s>>t;for(i=0;i<n;++i){fin>>v[i]>>p;if(d[st]==i-t-1)++st;while(st<=dr&&v[i]<=v[d[dr]]+(i-d[dr])*s)--dr;d[++dr]=i;S+=p*(v[d[st]]+(i-d[st])*s);}fout<<S;} ^