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请高手们帮我看一下我的代码,为什么runtime error哦???#include<stdio.h>
long f(long m,long n)
{
if(m==n)return m;
else if(m>n)return f(m-n,n);
else return f(m,n-m);
}
main()
{
long b[1006],temp=1,x,y,te,s=1;
int n,i,t,a[1006],c[1006],j=1;
scanf("%d",&n);
for(i=0;i<1004;i++)
c[i]=0;
for(i=1;i<=n;i++)
scanf("%d",&a[i]);
for(i=1;i<=n;i++)
{
if(c[i]==0)
{
t=a[i];c[i]=1;
while(i!=t)
{c[t]=1;t=a[t];s=s+1;}
b[j]=s;j++;s=1;
}
}
for(i=2;i<j;i++)
{
x=b[i-1];y=b[i];te=x*y;
temp=f(x,y);
if(temp>0)
b[i]=te/temp;
}
printf("%ld",b[i-1]);
}
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