Compilare: main.cpp:2:157: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type] 2 | std::ifstream f("scmax.in");std::ofstream g("scmax.out");int n,r,i,s,m,v[1<<17],k[1<<17],a[1<<17];void p(){int n;while(a[n=--i]-r);if(--r)p();g<<v[n]<<" ";}main(){for(f>>n,i=1;i<=n;i++){f>>v[i],s=0,k[i]=2e9;while(k[s]<v[i])s++;if(k[s-1]<v[i])k[a[i]=s]=v[i],r=s>r?s:r;}g<<r<<" ",p();} | ^~~~