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【贪心】Ybt_奶牛晒衣服
阅读量:363 次
发布时间:2019-03-04

本文共 591 字,大约阅读时间需要 1 分钟。

题目

有n件衣服,其中每一件衣服的初始湿度为 h[i] 。

每秒钟衣服会自然风干a个湿度,你也可以选择一件衣服吹干使它这个回合降低b个湿度。
当衣服湿度等于0时这件衣服就干了。
问最少需要多长时间。


贪心,肯定选择吹干最湿的那件衣服。

然后考虑怎么判断所有衣服经自然风干后是否为干的:
统计经过时间内所有衣服的风干度,再拿最湿的与其相比即可。


代码

#include
#include
#include
using namespace std;priority_queue
q; //大根堆int n, a, b, s, t, ans;int main(){ scanf("%d%d%d",&n,&a,&b); for(int i = 1; i <= n; ++i){ scanf("%d",&s); q.push(s); //放入堆中 } while(q.top() > t){ //当最湿的衣服大于(时间*自然风干降低的湿度)时,吹他 ++ans; //加秒数 int l = q.top(); q.pop(); t = t+a; //所有衣服自然风干t q.push(l-b); //吹 } printf("%d",ans); //输出答案}

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