2023-09-01力扣每日一题
链接:
2240. 买钢笔和铅笔的方案数
题意:
一共total元,两种笔分别cost1和cost2元,求能买的的笔的所有情况,不要求花光钱
解:
枚举其中一个数字就行
实际代码:
#include<bits/stdc++.h>
using namespace std;
long long waysToBuyPensPencils(int total, int cost1, int cost2)
{long long a=total/cost1,b=(total-a*cost1)/cost2,ans=0;while(a>=0){ans+=b+1;a--;b=(total-a*cost1)/cost2;}cout<<ans<<endl;return ans;
}
int main()
{int total,cost1,cost2;cin>>total>>cost1>>cost2;long long ans=waysToBuyPensPencils(total,cost1,cost2);cout<<ans<<endl;
}
限制:
1 <= total, cost1, cost2 <= 106