import java.util.Scanner;
// 1:无需package
// 2: 类名必须Main, 不可修改
public class Main {
public static void main(String[] args) {
int res = 0;
int dp1 = 1;
int dp2 = 1;
int dp = 0;
//个位元素中每60项为1个周期
for(long i = 3; i <= 60; i++){
dp = (dp1 + dp2) % 10;
if(dp == 7){
res++;
}
dp2 = dp1;
dp1 = dp;
}
System.out.println(res * (202202011200L/60));
}
}
...全文