SPOJ SOLUTIONS: WPC5B-Crypto

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Wednesday, April 2, 2014

WPC5B-Crypto

Crypto

given below code is for wpc5b spoj or crypto spoj.

Here no need of explanation every number multiplied with itself get repeated after some interval .So here just calculate the interval.

.. Happy Coding ..

#include <bits/stdc++.h>
using namespace std;
#define MOD 10
int main()
{
 long long t;
 int temp,m;
 int res[10][5]={{0,0,0,0,1},
                 {1,1,1,1,1},
                 {6,2,4,8,4},
                 {1,3,9,7,4},
                 {6,4,0,0,2},
                 {5,0,0,0,1},
                 {6,0,0,0,1},
                 {1,7,9,3,4},
                 {6,8,4,2,4},
                 {1,9,0,0,2},
    };
 scanf("%lld",&t);
 while(t--)
 {
  long long a,b;
  scanf("%lld%lld",&a,&b);
  if(b==0){
   printf("1\n");
   continue;}
  temp = a % MOD;
  m = b%res[temp][4];
  printf("%d\n",res[temp][m]);
 }
 return 0;
}