前来围观大佬 #include<cstdio>//N185_06 #include<iostream> #include<cstring> #include<string> #include<cmath> #include<algorithm> #include<cstdlib> using namespace std; long long x; int cnt=1; double sum,xx[12]; int main(){ freopen("F.out","w",stdout); for(int i=1;i<=10;i++){ x=x*10+7; xx[i]=x*log10(x); } for(long long i=1;;i++){ if(cnt==11){ break; } sum+=log10(i); if(sum>xx[cnt]){ printf("%lld\n",i); cerr<<i<<endl; cnt++; } } return 0; }