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郁闷啊,怎么查不出来错啊?

Posted by dexter at 2004-03-08 20:27:39 on Problem 1331
#include<stdio.h>
#include<math.h>
char a[7],b[7],c[7];
int suit(long p,long q,long r,int base)
{
	long x,y,z;
	int i,j,k,l,max;
	x=y=z=max=0;
	for(i=0;p;i++)
	{
		if((p%10)>max)
			max=p%10;
		a[i]=p%10+'0';
		p/=10;
	}
	a[i]='\0';
	for(j=0;q;j++)
	{
		if((q%10)>max)
			max=q%10;
		b[j]=q%10+'0';
		q/=10;
	}
	a[j]='\0';
	for(k=0;r;k++)
	{
		if((r%10)>max)
			max=r%10;
		c[k]=r%10+'0';
		r/=10;
	}
	c[k]='\0';
	for(l=i-1;l>=0;l--)
		x+=(a[l]-'0')*pow(base,l);
	for(l=j-1;l>=0;l--)
		y+=(b[l]-'0')*pow(base,l);
	for(l=k-1;l>=0;l--)
		z+=(c[l]-'0')*pow(base,l);
	if(max>=base)
		return 0;
	else
	{
	if((x*y)==z)
		return 1;
	else
		return 0;
	}
}
int multiply(long p,long q,long r)
{
	int i;
	for(i=2;i<=16;i++)
		if(suit(p,q,r,i))
			return i;
	return 0;
}
main()
{
	int t,i;
	long p,q,r;
	scanf("%d",&t);
	for(i=0;i<t;i++)
	{
		scanf("%ld%ld%ld",&p,&q,&r);
		printf("%d\n",multiply(p,q,r));
	}
}

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