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ID题目提交者结果用时内存语言文件大小提交时间测评时间
#790193#7588. Monster Hunterkonata2828WA 419ms12340kbC++142.6kb2024-11-28 07:48:292024-11-28 07:48:30

Judging History

你现在查看的是最新测评结果

  • [2024-11-28 07:48:30]
  • 评测
  • 测评结果:WA
  • 用时:419ms
  • 内存:12340kb
  • [2024-11-28 07:48:29]
  • 提交

answer

// Hydro submission #6747afcc9592d6097b871653@1732751308755
#include<iostream>
#include<cstring>
#include<algorithm>
#include<cmath>
#include<queue>

#define N 100009
#define LL long long
#define pii pair<int,int>
using namespace std;
int n,idx=1,h[N],eg[N*2],ne[N*2],fa[N],die[N];
int tim[N];
LL a[N],b[N];
struct node1{
    LL a,b;
    int t,id;
    bool operator<(const node1 c)const{
        return a>c.a;
    }
};
struct node2{
    LL a,b;
    int t,id;
    bool operator<(const node2 c)const{
        return b<c.b;
    }
};
priority_queue<node1> q1;
priority_queue<node2> q2;
void add(int a,int b){
    ++idx,eg[idx]=b,ne[idx]=h[a],h[a]=idx;
}
void dfs(int u){
    for(int y,i=h[u];i;i=ne[i]){
        y=eg[i];
        if(y==die[u]) continue;
        die[y]=u;
        dfs(y);
    }
}
int find(int u){
    if(fa[u]==u) return u;
    return fa[u]=find(fa[u]);
}
void solve(){
    scanf("%d",&n);
    for(int i=1;i<=n;i++) fa[i]=i,tim[i]=h[i]=0;
    idx=1;
    for(int i=2;i<=n;i++) scanf("%lld%lld",&a[i],&b[i]);
    for(int a,b,i=1;i<n;i++){
        scanf("%d%d",&a,&b);
        add(a,b);
        add(b,a);
    }
    dfs(1);
    for(int i=1;i<=n;i++){
        if(a[i]<=b[i]) q1.push({a[i],b[i],0,i});
        else q2.push({a[i],b[i],0,i});
    }
    int tot=0;
    while(q1.size() || q2.size()){
        if(q1.size()){
            node1 u=q1.top();
            q1.pop();
            if(u.t<tim[u.id]) continue;
            int y=find(u.id);
            if(y>1){
                int t=find(die[y]);
                fa[y]=t;
                LL mb=-a[t]+b[t]-a[y]+b[y];
                a[t]=-min(-a[t],-a[t]+b[t]-a[y]);
                b[t]=mb+a[t];
                tim[t]=++tot;
                if(a[t]<=b[t]) q1.push({a[t],b[t],tot,t});
                else q2.push({a[t],b[t],tot,t});
            }
        }else{
            node2 u=q2.top();
            q2.pop();
            if(u.t<tim[u.id]) continue;
            int y=find(u.id);
            if(y>1){
                int t=find(die[y]);
                fa[y]=t;
                LL mb=-a[t]+b[t]-a[y]+b[y];
                a[t]=-min(-a[t],-a[t]+b[t]-a[y]);
                b[t]=mb+a[t];
                tim[t]=++tot;
                if(a[t]<=b[t]) q1.push({a[t],b[t],tot,t});
                else q2.push({a[t],b[t],tot,t});
            }
        }
    }
    printf("%lld",a[1]);
}
int main() {
    int t;
    scanf("%d",&t);
    for(int i=1;i<=t;i++) solve();
    // freopen("tree.in","r",stdin);
    // freopen("tree.out","w",stdout);
    
    return 0;
}

詳細信息

Test #1:

score: 100
Accepted
time: 1ms
memory: 6020kb

input:

1
4
2 6
5 4
6 2
1 2
2 3
3 4

output:

3

result:

ok 1 number(s): "3"

Test #2:

score: -100
Wrong Answer
time: 419ms
memory: 12340kb

input:

10
50000
112474 198604
847262 632597
871374 962220
971398 284540
10360 695245
43233 569941
64019 203468
598469 997911
41841 657552
333198 936119
546370 180011
58831 901040
959767 396595
710441 277461
429299 209831
494164 138327
393982 581911
993164 617488
108113 160310
55841 611360
301395 291074
149...

output:

63495498604652243796269298796269298796269298796269298796269298796269298796269298796269298

result:

wrong output format Expected integer, but "634954986046522437962692987962...9298796269298796269298796269298" found