Codeforces 922C Cave Painting
題意: 給定
思路::找規律,很顯然對於所有的
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll MOD = 1e9 + 7;
const ll MAXN = 1e5;
int main()
{
ll n,k;
while(cin >>n>>k)
{
int flag=1;
for(ll i=1;i<=k;i++)
{
if(n%i!=i-1)
{
flag=0;
break;
}
}
if(flag)puts("Yes");
else puts("No");
}
}
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