Submission #2857262

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Source Code Expand

#include<bits/stdc++.h>
using namespace std;
int a[100010]={0},b[1000010]={0};
void dachengxiao(int a[],int x){
	for(int i=1;i<=a[0];i++){
		a[i]*=x;
		
	}
	for(int i=1;i<=a[0];i++){
		a[i+1]+=a[i]/10;
		a[i]%=10;
	}
	while(a[a[0]+1]){
		a[0]++;
		a[a[0]+1]+=a[a[0]]/10;
		a[a[0]]%=10;
	}
}
void jianfa(int a[],int b[]){
	for(int i=1;i<=a[0];i++){
		a[i]-=b[i];
	}
	for(int i=1;i<=a[0];i++){
		if(a[i]<0){
			a[i+1]--;
			a[i]+=10;
		}
	}
	while(a[0]>1&&a[a[0]]==0){
		a[0]--;
	}
}
void shuchu(int a[]){
	for(int i=a[0];i>=1;i--){
		cout<<a[i];
	}
	cout<<endl;
}
int main(){
	int n;
	cin>>n;
	
	a[0]=a[1]=b[0]=b[1]=1;
	for(int i=1;i<=n;i++){
		dachengxiao(a,10);
		dachengxiao(b,9);
	}
	jianfa(a,b);
	
	shuchu(a);
    return 0;
}

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Judge Result