两wa,测试点8AFK就很迷

P1462 通往奥格瑞玛的道路

烛木 @ 2020-09-05 10:06:02

#include<iostream>
#include<cstdio>
#include<cmath>
using namespace std;
long long tot,n,m,b,l[10002],f[10002];
long long head,tail,team[50002],vis[10002],dis[10002],maxf[10002];
struct node
{
    long long first,next,go,value;
}p[1000004];
void star(long long a,long long b,long long c)
{
    p[++tot].next=p[a].first;
    p[a].first=tot;
    p[tot].go=b;
    p[tot].value=c;
}
void spfa(long long a)
{
    for(long long i=1;i<=n;i++)
    {
        dis[i]=1000000000000;
    }
    dis[a]=maxf[a]=f[a];
    team[++tail]=a;
    while(head<=tail)
    {
        long long x=team[++head];
        vis[x]=0;
        for(long long i=p[x].first;i;i=p[i].next)
        {
            long long y=p[i].value,z=p[i].go;
            if(dis[x]+f[z]<dis[z]&&b>l[x]+y)
            {
                l[z]=l[x]+y;
                dis[z]=dis[x]+f[z];
                cout<<z<<"   "<<l[z]<<" "<<dis[z]<<" ";
                maxf[z]=max(maxf[x],f[z]);
                cout<<maxf[z]<<endl;
                if(!vis[z])
                {
                    team[++tail]=z;
                    vis[z]=1;
                }
            }
        }
    }
}
int main()
{
    //freopen("1.in","r",stdin);
    //freopen("1.out","w",stdout);
    cin>>n>>m>>b;
    for(long long i=1;i<=n;i++)
    {
        cin>>f[i];
    }
    for(long long i=1;i<=m;i++)
    {
        long long a,b,c;
        cin>>a>>b>>c;
        star(a,b,c);
        star(b,a,c);
    }
    spfa(1);
    cout<<maxf[n]<<endl;
    if(dis[n]==1000000000000)
    cout<<"AFK";
    else
    cout<<maxf[n];
    return 0;
}

by 烛木 @ 2020-09-05 10:06:59

有些测试用输出请忽略。。。。


by SegTre @ 2020-10-01 16:50:29

题目 说明/提示 最后一句“两条边可能连接着相同的城市”,有没有可能是因为这个玩意儿


by SegTre @ 2020-10-01 16:51:14

丧心病狂……有个测试点死活过不去


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