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  1. #include <stdio.h>
  2.  
  3. int main() {
  4.     int a, b;
  5.     scanf("%d%d", &a, &b);
  6.  
  7.     int countA = (a - 1) / 4 - (a - 1) / 100 + (a - 1) / 400; // leap year from 1 to a
  8.     int countB = b / 4 - b / 100 + b / 400;                   // leap year from 1 to b
  9.  
  10.     int result = countB - countA;                             //count how many leap year between a and b
  11.  
  12.     printf("%d", result);
  13.     return 0;
  14. }
Success #stdin #stdout 0s 5320KB
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2012 2016
stdout
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2
https://ideone.com/cMJLym
兩年之間的閏年數，不用for
language:
C (gcc 8.3)
created:
22 hours ago
visibility:
public

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