Submission #1678421

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Source Code Expand

#include<cstdio>
#include<algorithm>
#include<cstring>
#define fo(i,a,b) for(i=a;i<=b;i++)
using namespace std;
const int maxn=500000+10;
char s[maxn];
int a[maxn];
int i,j,k,l,t,n,m,num;
int main(){
	scanf("%s",s);
	n=strlen(s);
	reverse(s,s+n);
	fo(i,0,n-1) a[i]=s[i]-'0';
	t=i=0;
	while (i<n){
		t+=a[i]*9;
		a[i]=t%10;
		t/=10;
		if (t&&i==n-1) n++;
		i++;
	}
	fo(i,0,n-1) num+=a[i];
	fo(k,1,1000000000){
		a[0]++;
		if (a[0]<10) continue;
		num++;
		t=i=0;
		while (i<n){
			t+=a[i];
			num-=a[i];
			a[i]=t%10;
			num+=a[i];
			t/=10;
			if (!t) break;
			if (i==n-1) n++;
			i++;
		}
		if (!a[0]&&num==k) break;
	}
	printf("%d\n",(k-1)/9+1);
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:11:15: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%s",s);
               ^

Judge Result