Number Sequence (HDoj1005)
f(1) =
1, f(2) = 1, f(n) = (A * f(n - 1) + B * f(n - 2)) mod 7.
Given A, B, and
n, you are to calculate the value of f(n).
case contains 3 integers A, B and n on a single line (1 <= A, B <= 1000, 1
<= n <= 100,000,000). Three zeros signal the end of input and this test
case is not to be processed.
line.
#include<stdio.h>
#include<math.h>
int f(int a,int b,int n)
{
if(n==)
return ;
if(n==)
return ;
return (a*f(a,b,n-)+b*f(a,b,n-))%;
}
int main()
{
int a,b;
int n;
while(scanf("%d%d%d",&a,&b,&n)==)
{
if(a==b&&b==n&&n==)
break;
else
printf("%d\n",f(a,b,n%));
}
}
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