HDU 1896 Stones --优先队列+搜索

一直向前搜。。做法有点像模拟。但是要用到出队入队,有点像搜索。

代码:

#include <iostream>
#include <cstdio>
#include <cstring>
#include <cmath>
#include <algorithm>
#include <queue>
using namespace std;
#define N 100003

struct node
{
    int p,d;
    bool operator <(const node &a)const
    {
        if(p == a.p)
            return d>a.d;
        return p>a.p;
    }
}stone[N];

int maxdis;
priority_queue<node> que;

void GO()
{
    node now,next;
    int OE = 1;
    while(!que.empty())
    {
        now = que.top();
        que.pop();
        if(OE)
        {
            next.p = now.p + now.d;
            next.d = now.d;
            que.push(next);
            maxdis = max(next.p,maxdis);
            OE = 0;
        }
        else
            OE = 1;
    }
}

int main()
{
    int t,i,p,d,n;
    scanf("%d",&t);
    while(t--)
    {
        maxdis = 0;
        scanf("%d",&n);
        for(i=0;i<n;i++)
        {
            scanf("%d%d",&stone[i].p,&stone[i].d);
            que.push(stone[i]);
        }
        GO();
        printf("%d
",maxdis);
    }
    return 0;
}
View Code
原文地址:https://www.cnblogs.com/whatbeg/p/3574452.html