Description
Find the number of k-divisible numbers on the segment [a, b]. In other words you need to find the number of such integer values x that a ≤ x ≤ b and x is divisible by k.
Input
The only line contains three space-separated integers k, a and b (1 ≤ k ≤ 1018; - 1018 ≤ a ≤ b ≤ 1018).
Output
Print the required number.
Sample Input
Input
1 1 10
Output
10
Input
2 -4 4
Output
5
I64全换成LL就输出错误。。。什么跟什么嘛
,浪费时间。。
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
为什么这个用LL没问题。。。。
#include<cstdio>
#include<algorithm>
using namespace std;
int main() {
long long k,a,b;
while(scanf("%lld %lld %lld",&k,&a,&b)!=EOF)
{
long long ans;
if(a>0&&b>0)
ans=abs(b/k)-abs((a-1)/k);
else if(a<0&&b<0)
ans=abs(a/k)-abs((b+1)/k);
else ans=abs(a/k)+abs(b/k)+1;
printf("%lld\n",ans);
}
return 0;
}


被折叠的 条评论
为什么被折叠?



