Submission #1500579

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Source Code Expand

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <limits.h>
#define swap(type,a,b) do{type t=a;a=b;b=t;}while(0);
#define MAX(a,b) (((a)>(b))?(a):(b))
#define MIN(a,b) (((a)<(b))?(a):(b))
#define ll long long
#define INF 100000000
#define FOR(i,a,n) for(i=(a);i<(n);i++)
int comp(const void* a,const void* b){
	return *(int*)a-*(int*)b;
}
void fill(int a[],int b,int c){
	int i;
	FOR(i,0,b) a[i]=c;
	return;
}
int main(void)
{
	int a,b,res,k,p;
	scanf("%d%d",&a,&b);
	res=a-b;
	for(k=100;k>0;k/=10){
		int s=a/k,t=b/k;
		if(k==100) p=MAX(9-s,t-1);
		else p=MAX(9-s,t);
		if(p>0){
			res+=p*k;
			break;
		}
		a%=k,b%=k;
	}
	printf("%d\n",res);
	return 0;
}

Submission Info

Compile Error

./Main.c: In function ‘main’:
./Main.c:23:2: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d",&a,&b);
  ^

Judge Result