28 lines
573 B
C++
28 lines
573 B
C++
#include<stdio.h>
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int main()
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{
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int f[200],a,b,n,i;
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while(scanf("%d%d%d",&a,&b,&n),a||b||n)
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{
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if(n>2)
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{
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f[1]=f[2]=1;
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for(i=3;i<200;i++)
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{
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f[i]=(a*f[i-1]+b*f[i-2])%7;
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if(f[i-1]==1&&f[i]==1)
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break;
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}
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i-=2;
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n=n%i;
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if(n==0)
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printf("%d\n",f[i]);
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else
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printf("%d\n",f[n]);
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}
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else
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printf("1\n");
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}
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return 0;
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}
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