Submission #4899442

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Source Code Expand

#include<iostream>
using namespace std;
int a,n,b,m,ans;
int a1,a2,a3,b1,b2,b3; 

int main(){
	cin>>a>>b;
	a1=a/100;
	a2=a/10%10;
	a3=a%10;
	b1=b/100;
	b2=b/10%10;
	b3=b%10;
	//cout<<a1<<" "<<a2<<" "<<a3<<" "<<b1<<" "<<b2<<" "<<b3<<endl;
	if(a1==9&&b1==1){
		if(a2==9&&b2==0){
			if(a3==9&&b3==0)a=a,b=b;
			else {
				if(9-a3>=b3-1)a=a1*100+a2*10+9;
				else b=b1*100+b2*10;
			}
		}
		else {
			if(9-a2>=b2-1)a=a1*100+90+a3;
			else b=b1*100+b3;
		}
	}
	else {
		if(9-a1>=b1-1)a=900+a2*10+a3;
		else b=100+b2*10+b3;
	}
	ans=a-b;
	cout<<ans<<endl;
	return 0;
}

Submission Info

Judge Result