https://leetcode-cn.com/problems/arranging-coins/
class Solution {
public:
int arrangeCoins(int n)
{
int cnt=0,i=1;
while(n>=i) cnt++,n-=i,i++;
return cnt;
}
};

https://leetcode-cn.com/problems/arranging-coins/
class Solution {
public:
int arrangeCoins(int n)
{
int cnt=0,i=1;
while(n>=i) cnt++,n-=i,i++;
return cnt;
}
};