洛谷B2075幂的末尾

Posted 2022-11-09

#include<stdio.h>

#include<math.h>

int main()



  int a, b;

  scanf("%d %d", &a, &b);

  int ret = a;

  for (int i = 0; i < b - 1; i++)

  

  ret *= a;

  ret %= 1000;//如果是4位数这个命令就会生效，取后三位数

  

  if (ret == 0)printf("000");

  else if (ret < 10)printf("00%d\\n", ret);

  else if (ret < 100)printf("0%d\\n", ret);

  else printf("%d\\n", ret);

  return 0;