oj.uz

답안 #825374

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
825374 2023-08-14T18:59:03 Z winter0101 Designated Cities (JOI19_designated_cities) C++14
100 / 100
 503 ms 67076 KB 
#include<bits/stdc++.h>
using namespace std;
#define all(fl) fl.begin(),fl.end()
#define pb push_back
#define fi first
#define se second
#define for1(i,j,k) for(int i=j;i<=k;i++)
#define for2(i,j,k) for(int i=j;i>=k;i--)
#define for3(i,j,k,l) for(int i=j;i<=k;i+=l)
#define lb lower_bound
#define ub upper_bound
#define sz(a) (int)a.size()
#define pii pair<int,int>
#define pli pair<long long,int>
#define gcd __gcd
#define lcm(x,y) x*y/__gcd(x,y)
#define pil pair<int,long long>
#define pll pair<long long,long long>
#define eb emplace_back
#define pli pair<long long,int>
#define int long long
pii cmp(pli &p, pli &q){
if (p.fi>q.fi)return p;
return q;
}
struct IT{
vector<pli>st;
vector<long long>lazy;
void resz(int n){
st.resize(4*n+9);
lazy.resize(4*n+9);
}
void push(int id){
if (lazy[id]){
    lazy[id*2]+=lazy[id];
    lazy[id*2+1]+=lazy[id];
    st[id*2].fi+=lazy[id];
    st[id*2+1].fi+=lazy[id];
    lazy[id]=0;
}
}
void update(int id,int l,int r,int u,int v,long long val){
if (l>v||r<u||u>v)return;
if (u<=l&&r<=v){
    st[id].fi+=val;
    lazy[id]+=val;
    if (l==r)st[id].se=l;
    return;
}
push(id);
int mid=(l+r)/2;
update(id*2,l,mid,u,v,val);
update(id*2+1,mid+1,r,u,v,val);
st[id]=cmp(st[id*2],st[id*2+1]);
}
};
const int maxn=2e5+9;
vector<pil>a[maxn];
long long f[maxn];//subtree
long long g[maxn];//g[i] if i root
pli dfs1(int u,int par){
pli test={0,u};
for (auto v:a[u]){
    if (v.fi==par)continue;
    auto tmp=dfs1(v.fi,u);
    tmp.fi+=v.se;
    test=cmp(test,tmp);
    f[u]+=v.se+f[v.fi];
}
return test;
}
void dfs2(int u,int par){
    for (auto v:a[u]){
        if (v.fi==par){
            g[u]+=v.se;
        }
    }
    for (auto v:a[u]){
        if (v.fi==par)continue;
        g[v.fi]=g[u]-v.se;
        dfs2(v.fi,u);
    }
}
long long dep[maxn],ans[maxn],w[maxn];
int in[maxn],out[maxn],rev[maxn],tme=0,p[maxn];
bool vis[maxn];
void dfs3(int u,int par){
    in[u]=++tme;
    rev[tme]=u;
    for (auto v:a[u]){
        if (v.fi==par)continue;
        dep[v.fi]=dep[u]+v.se;
        w[v.fi]=v.se;
        p[v.fi]=u;
        dfs3(v.fi,u);
    }
    out[u]=tme;
}
IT st;
int n;
void del(int u){
    while (u){
        if (vis[u])return;
        st.update(1,1,n,in[u],out[u],-w[u]);
        vis[u]=1;
        u=p[u];
    }
}
signed main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    //freopen("temp.INP","r",stdin);
    //freopen("temp.OUT","w",stdout);
    cin>>n;
    for1(i,1,n-1){
    int u,v;
    long long x,y;
    cin>>u>>v>>x>>y;
    a[u].pb({v,x});
    a[v].pb({u,y});
    }
    dfs1(1,0);
    g[1]=f[1];
    dfs2(1,0);
    int r1=min_element(g+1,g+1+n)-g;
    ans[1]=g[r1];
    int root=dfs1(r1,0).se;
    vis[root]=1;
    dfs3(root,0);
    st.resz(n);
    for1(i,1,n){
    st.update(1,1,n,in[i],in[i],dep[i]);
    }
    long long sum=g[root];
    for1(i,2,n){
    if (st.st[1].fi==0){
        ans[i]=sum;
        continue;
    }
    sum-=st.st[1].fi;
    ans[i]=sum;
    del(rev[st.st[1].se]);
    }
    int q;
    cin>>q;
    for1(i,1,q){
    int x;
    cin>>x;
    cout<<ans[x]<<'\n';
    }
}

Subtask #1
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 5076 KB Output is correct
2 Correct 3 ms 5076 KB Output is correct
3 Correct 2 ms 5076 KB Output is correct
4 Correct 2 ms 5076 KB Output is correct
5 Correct 2 ms 5076 KB Output is correct
6 Correct 2 ms 5008 KB Output is correct
7 Correct 3 ms 5076 KB Output is correct
8 Correct 2 ms 5076 KB Output is correct
9 Correct 2 ms 5080 KB Output is correct
10 Correct 2 ms 5076 KB Output is correct
11 Correct 2 ms 5076 KB Output is correct

Subtask #2
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 5076 KB Output is correct
2 Correct 362 ms 48324 KB Output is correct
3 Correct 360 ms 63756 KB Output is correct
4 Correct 320 ms 48240 KB Output is correct
5 Correct 340 ms 48192 KB Output is correct
6 Correct 346 ms 50552 KB Output is correct
7 Correct 314 ms 47708 KB Output is correct
8 Correct 397 ms 64812 KB Output is correct
9 Correct 332 ms 45880 KB Output is correct

Subtask #3
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 5076 KB Output is correct
2 Correct 388 ms 48288 KB Output is correct
3 Correct 453 ms 67076 KB Output is correct
4 Correct 316 ms 48300 KB Output is correct
5 Correct 416 ms 48204 KB Output is correct
6 Correct 390 ms 51324 KB Output is correct
7 Correct 350 ms 47448 KB Output is correct
8 Correct 470 ms 58304 KB Output is correct
9 Correct 328 ms 45876 KB Output is correct

Subtask #4
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 5076 KB Output is correct
2 Correct 3 ms 5076 KB Output is correct
3 Correct 2 ms 5076 KB Output is correct
4 Correct 2 ms 5076 KB Output is correct
5 Correct 2 ms 5076 KB Output is correct
6 Correct 2 ms 5008 KB Output is correct
7 Correct 3 ms 5076 KB Output is correct
8 Correct 2 ms 5076 KB Output is correct
9 Correct 2 ms 5080 KB Output is correct
10 Correct 2 ms 5076 KB Output is correct
11 Correct 2 ms 5076 KB Output is correct
12 Correct 3 ms 5076 KB Output is correct
13 Correct 4 ms 5460 KB Output is correct
14 Correct 4 ms 5716 KB Output is correct
15 Correct 4 ms 5460 KB Output is correct
16 Correct 5 ms 5460 KB Output is correct
17 Correct 4 ms 5460 KB Output is correct
18 Correct 4 ms 5460 KB Output is correct
19 Correct 5 ms 5460 KB Output is correct
20 Correct 5 ms 5508 KB Output is correct
21 Correct 5 ms 5468 KB Output is correct
22 Correct 5 ms 5516 KB Output is correct
23 Correct 4 ms 5460 KB Output is correct
24 Correct 6 ms 5464 KB Output is correct
25 Correct 5 ms 5588 KB Output is correct
26 Correct 4 ms 5460 KB Output is correct

Subtask #5
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 5076 KB Output is correct
2 Correct 362 ms 48324 KB Output is correct
3 Correct 360 ms 63756 KB Output is correct
4 Correct 320 ms 48240 KB Output is correct
5 Correct 340 ms 48192 KB Output is correct
6 Correct 346 ms 50552 KB Output is correct
7 Correct 314 ms 47708 KB Output is correct
8 Correct 397 ms 64812 KB Output is correct
9 Correct 332 ms 45880 KB Output is correct
10 Correct 2 ms 5076 KB Output is correct
11 Correct 388 ms 48288 KB Output is correct
12 Correct 453 ms 67076 KB Output is correct
13 Correct 316 ms 48300 KB Output is correct
14 Correct 416 ms 48204 KB Output is correct
15 Correct 390 ms 51324 KB Output is correct
16 Correct 350 ms 47448 KB Output is correct
17 Correct 470 ms 58304 KB Output is correct
18 Correct 328 ms 45876 KB Output is correct
19 Correct 3 ms 5076 KB Output is correct
20 Correct 404 ms 48228 KB Output is correct
21 Correct 398 ms 66512 KB Output is correct
22 Correct 340 ms 48236 KB Output is correct
23 Correct 411 ms 48572 KB Output is correct
24 Correct 416 ms 48528 KB Output is correct
25 Correct 408 ms 48624 KB Output is correct
26 Correct 357 ms 48488 KB Output is correct
27 Correct 377 ms 48236 KB Output is correct
28 Correct 379 ms 50472 KB Output is correct
29 Correct 404 ms 48824 KB Output is correct
30 Correct 340 ms 48088 KB Output is correct
31 Correct 327 ms 47548 KB Output is correct
32 Correct 427 ms 59052 KB Output is correct
33 Correct 313 ms 45856 KB Output is correct

Subtask #6
44.0 / 44.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 5076 KB Output is correct
2 Correct 3 ms 5076 KB Output is correct
3 Correct 2 ms 5076 KB Output is correct
4 Correct 2 ms 5076 KB Output is correct
5 Correct 2 ms 5076 KB Output is correct
6 Correct 2 ms 5008 KB Output is correct
7 Correct 3 ms 5076 KB Output is correct
8 Correct 2 ms 5076 KB Output is correct
9 Correct 2 ms 5080 KB Output is correct
10 Correct 2 ms 5076 KB Output is correct
11 Correct 2 ms 5076 KB Output is correct
12 Correct 2 ms 5076 KB Output is correct
13 Correct 362 ms 48324 KB Output is correct
14 Correct 360 ms 63756 KB Output is correct
15 Correct 320 ms 48240 KB Output is correct
16 Correct 340 ms 48192 KB Output is correct
17 Correct 346 ms 50552 KB Output is correct
18 Correct 314 ms 47708 KB Output is correct
19 Correct 397 ms 64812 KB Output is correct
20 Correct 332 ms 45880 KB Output is correct
21 Correct 2 ms 5076 KB Output is correct
22 Correct 388 ms 48288 KB Output is correct
23 Correct 453 ms 67076 KB Output is correct
24 Correct 316 ms 48300 KB Output is correct
25 Correct 416 ms 48204 KB Output is correct
26 Correct 390 ms 51324 KB Output is correct
27 Correct 350 ms 47448 KB Output is correct
28 Correct 470 ms 58304 KB Output is correct
29 Correct 328 ms 45876 KB Output is correct
30 Correct 3 ms 5076 KB Output is correct
31 Correct 4 ms 5460 KB Output is correct
32 Correct 4 ms 5716 KB Output is correct
33 Correct 4 ms 5460 KB Output is correct
34 Correct 5 ms 5460 KB Output is correct
35 Correct 4 ms 5460 KB Output is correct
36 Correct 4 ms 5460 KB Output is correct
37 Correct 5 ms 5460 KB Output is correct
38 Correct 5 ms 5508 KB Output is correct
39 Correct 5 ms 5468 KB Output is correct
40 Correct 5 ms 5516 KB Output is correct
41 Correct 4 ms 5460 KB Output is correct
42 Correct 6 ms 5464 KB Output is correct
43 Correct 5 ms 5588 KB Output is correct
44 Correct 4 ms 5460 KB Output is correct
45 Correct 3 ms 5076 KB Output is correct
46 Correct 404 ms 48228 KB Output is correct
47 Correct 398 ms 66512 KB Output is correct
48 Correct 340 ms 48236 KB Output is correct
49 Correct 411 ms 48572 KB Output is correct
50 Correct 416 ms 48528 KB Output is correct
51 Correct 408 ms 48624 KB Output is correct
52 Correct 357 ms 48488 KB Output is correct
53 Correct 377 ms 48236 KB Output is correct
54 Correct 379 ms 50472 KB Output is correct
55 Correct 404 ms 48824 KB Output is correct
56 Correct 340 ms 48088 KB Output is correct
57 Correct 327 ms 47548 KB Output is correct
58 Correct 427 ms 59052 KB Output is correct
59 Correct 313 ms 45856 KB Output is correct
60 Correct 2 ms 5076 KB Output is correct
61 Correct 391 ms 49612 KB Output is correct
62 Correct 444 ms 66528 KB Output is correct
63 Correct 373 ms 49672 KB Output is correct
64 Correct 406 ms 49940 KB Output is correct
65 Correct 451 ms 49772 KB Output is correct
66 Correct 376 ms 49940 KB Output is correct
67 Correct 388 ms 49732 KB Output is correct
68 Correct 402 ms 49860 KB Output is correct
69 Correct 503 ms 52356 KB Output is correct
70 Correct 416 ms 50232 KB Output is correct
71 Correct 388 ms 49592 KB Output is correct
72 Correct 412 ms 49712 KB Output is correct
73 Correct 438 ms 61736 KB Output is correct
74 Correct 384 ms 48764 KB Output is correct