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답안 #777262

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
777262 2023-07-08T23:44:14 Z bachhoangxuan 별자리 3 (JOI20_constellation3) C++17
100 / 100
 503 ms 130056 KB 
// Judges with GCC >= 12 only needs Ofast
// #pragma GCC optimize("O3,no-stack-protector,fast-math,unroll-loops,tree-vectorize")
// MLE optimization
// #pragma GCC optimize("conserve-stack")
// Old judges
// #pragma GCC target("sse4.2,popcnt,lzcnt,abm,mmx,fma,bmi,bmi2")
// New judges. Test with assert(__builtin_cpu_supports("avx2"));
// #pragma GCC target("avx2,popcnt,lzcnt,abm,bmi,bmi2,fma,tune=native")
// Atcoder
// #pragma GCC target("avx2,popcnt,lzcnt,abm,bmi,bmi2,fma")
/*
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
typedef tree<int,null_type,less<int>,rb_tree_tag,tree_order_statistics_node_update> ordered_set;
- insert(x),erase(x)
- find_by_order(k): return iterator to the k-th smallest element
- order_of_key(x): the number of elements that are strictly smaller
*/
#include<bits/stdc++.h>
using namespace std;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
uniform_real_distribution<> pp(0.0,1.0);
#define int long long
#define ld long double
#define pii pair<int,int>
#define piii pair<pii,int>
#define mpp make_pair
#define fi first
#define se second
const int inf=1e18;
const int mod=1e9+7;
const int maxn=100005;
const int bl=650;
const int maxs=655;
const int maxm=200005;
const int maxq=500005;
const int maxl=18;
const int maxa=250000;
const int root=3;
int power(int a,int n){
    int res=1;
    while(n){
        if(n&1) res=res*a%mod;
        a=a*a%mod;n>>=1;
    }
    return res;
}
const int iroot=power(3,mod-2);
const int base=101;
namespace BIT{
    int n;
    vector<int> bit;
    void init(int N){
        n=N;
        bit.assign(n+1,0);
    }
    int query(int x){
        int res=0;
        for(int i=x;i>=1;i-=(i&(-i))) res+=bit[i];
        return res;
    }
    void update(int x,int val){
        for(int i=x;i<=n;i+=(i&(-i))) bit[i]+=val;
    }
    void update_range(int l,int r,int val){
        update(l,val);update(r+1,-val);
    }
}
void solve(){
    int n;cin >> n;
    vector<vector<int>> edge(n+1),par(n+1,vector<int>(maxl,0));
    vector<int> dep(n+1,0),L(n+1),R(n+1);
    int pos=0;
    vector<int> a(n+1),v;
    for(int i=1;i<=n;i++){
        int lst=-1;cin >> a[i];
        while(!v.empty() && a[v.back()]<a[i]) lst=v.back(),v.pop_back();
        if(!v.empty()) par[i][0]=v.back();
        if(lst!=-1) par[lst][0]=i;
        v.push_back(i);
    }
    int rt=-1;
    for(int i=1;i<=n;i++){
        if(par[i][0]==0) rt=i;
        else edge[par[i][0]].push_back(i);
    }
    function<void(int)> dfs = [&](int u){
        dep[u]=dep[par[u][0]]+1;L[u]=++pos;
        for(int i=1;i<maxl;i++) par[u][i]=par[par[u][i-1]][i-1];
        for(int v:edge[u]) dfs(v);
        R[u]=pos;
    };
    dfs(rt);
    BIT::init(n);
    auto jmp = [=](int x,int y){
        for(int i=maxl-1;i>=0;i--){
            int p=par[x][i];
            if(p==0) continue;
            else if(y>a[p]) x=p;
        }
        return x;
    };
    int m,sum=0;cin >> m;
    vector<vector<pii>> star(n+1);
    for(int i=1;i<=m;i++){
        int x,y,c;cin >> x >> y >> c;y=jmp(x,y);
        star[y].push_back({x,c});sum+=c;
        //cout << x << ' ' << y << ' ' << c << '\n';
    }
    vector<int> dp(n+1,0);
    function<void(int)> dfs2 = [&](int u){
        int xx=0;
        for(int v:edge[u]) xx^=v,dfs2(v),dp[u]+=dp[v];
        for(int v:edge[u]) if(xx!=v) BIT::update_range(L[v],R[v],dp[xx^v]);
        for(auto &[v,c]:star[u]){
            int cur=c+BIT::query(L[v]);
            for(int w:edge[v]) cur+=dp[w];
            dp[u]=max(dp[u],cur);
        }
    };
    dfs2(rt);
    cout << sum-dp[rt] << '\n';
}
signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);cout.tie(NULL);
    int test=1;//cin >> test;
    while(test--) solve();
}

Subtask #1
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 468 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Correct 1 ms 468 KB Output is correct
4 Correct 1 ms 468 KB Output is correct
5 Correct 1 ms 452 KB Output is correct
6 Correct 1 ms 468 KB Output is correct
7 Correct 1 ms 468 KB Output is correct
8 Correct 1 ms 468 KB Output is correct
9 Correct 1 ms 448 KB Output is correct
10 Correct 1 ms 468 KB Output is correct
11 Correct 1 ms 456 KB Output is correct
12 Correct 1 ms 468 KB Output is correct
13 Correct 1 ms 468 KB Output is correct
14 Correct 1 ms 468 KB Output is correct
15 Correct 1 ms 460 KB Output is correct
16 Correct 1 ms 468 KB Output is correct
17 Correct 1 ms 468 KB Output is correct
18 Correct 1 ms 468 KB Output is correct
19 Correct 1 ms 468 KB Output is correct
20 Correct 1 ms 468 KB Output is correct
21 Correct 1 ms 468 KB Output is correct
22 Correct 1 ms 468 KB Output is correct

Subtask #2
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 468 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Correct 1 ms 468 KB Output is correct
4 Correct 1 ms 468 KB Output is correct
5 Correct 1 ms 452 KB Output is correct
6 Correct 1 ms 468 KB Output is correct
7 Correct 1 ms 468 KB Output is correct
8 Correct 1 ms 468 KB Output is correct
9 Correct 1 ms 448 KB Output is correct
10 Correct 1 ms 468 KB Output is correct
11 Correct 1 ms 456 KB Output is correct
12 Correct 1 ms 468 KB Output is correct
13 Correct 1 ms 468 KB Output is correct
14 Correct 1 ms 468 KB Output is correct
15 Correct 1 ms 460 KB Output is correct
16 Correct 1 ms 468 KB Output is correct
17 Correct 1 ms 468 KB Output is correct
18 Correct 1 ms 468 KB Output is correct
19 Correct 1 ms 468 KB Output is correct
20 Correct 1 ms 468 KB Output is correct
21 Correct 1 ms 468 KB Output is correct
22 Correct 1 ms 468 KB Output is correct
23 Correct 2 ms 1308 KB Output is correct
24 Correct 2 ms 1236 KB Output is correct
25 Correct 2 ms 1236 KB Output is correct
26 Correct 2 ms 1344 KB Output is correct
27 Correct 2 ms 1236 KB Output is correct
28 Correct 2 ms 1236 KB Output is correct
29 Correct 2 ms 1236 KB Output is correct
30 Correct 2 ms 1364 KB Output is correct
31 Correct 2 ms 1236 KB Output is correct
32 Correct 2 ms 1492 KB Output is correct
33 Correct 2 ms 1492 KB Output is correct
34 Correct 2 ms 1364 KB Output is correct
35 Correct 2 ms 1364 KB Output is correct
36 Correct 2 ms 1492 KB Output is correct
37 Correct 2 ms 1492 KB Output is correct
38 Correct 2 ms 1488 KB Output is correct
39 Correct 2 ms 1360 KB Output is correct
40 Correct 2 ms 1488 KB Output is correct
41 Correct 2 ms 1364 KB Output is correct
42 Correct 2 ms 1344 KB Output is correct
43 Correct 2 ms 1488 KB Output is correct
44 Correct 2 ms 1236 KB Output is correct

Subtask #3
65.0 / 65.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 468 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Correct 1 ms 468 KB Output is correct
4 Correct 1 ms 468 KB Output is correct
5 Correct 1 ms 452 KB Output is correct
6 Correct 1 ms 468 KB Output is correct
7 Correct 1 ms 468 KB Output is correct
8 Correct 1 ms 468 KB Output is correct
9 Correct 1 ms 448 KB Output is correct
10 Correct 1 ms 468 KB Output is correct
11 Correct 1 ms 456 KB Output is correct
12 Correct 1 ms 468 KB Output is correct
13 Correct 1 ms 468 KB Output is correct
14 Correct 1 ms 468 KB Output is correct
15 Correct 1 ms 460 KB Output is correct
16 Correct 1 ms 468 KB Output is correct
17 Correct 1 ms 468 KB Output is correct
18 Correct 1 ms 468 KB Output is correct
19 Correct 1 ms 468 KB Output is correct
20 Correct 1 ms 468 KB Output is correct
21 Correct 1 ms 468 KB Output is correct
22 Correct 1 ms 468 KB Output is correct
23 Correct 2 ms 1308 KB Output is correct
24 Correct 2 ms 1236 KB Output is correct
25 Correct 2 ms 1236 KB Output is correct
26 Correct 2 ms 1344 KB Output is correct
27 Correct 2 ms 1236 KB Output is correct
28 Correct 2 ms 1236 KB Output is correct
29 Correct 2 ms 1236 KB Output is correct
30 Correct 2 ms 1364 KB Output is correct
31 Correct 2 ms 1236 KB Output is correct
32 Correct 2 ms 1492 KB Output is correct
33 Correct 2 ms 1492 KB Output is correct
34 Correct 2 ms 1364 KB Output is correct
35 Correct 2 ms 1364 KB Output is correct
36 Correct 2 ms 1492 KB Output is correct
37 Correct 2 ms 1492 KB Output is correct
38 Correct 2 ms 1488 KB Output is correct
39 Correct 2 ms 1360 KB Output is correct
40 Correct 2 ms 1488 KB Output is correct
41 Correct 2 ms 1364 KB Output is correct
42 Correct 2 ms 1344 KB Output is correct
43 Correct 2 ms 1488 KB Output is correct
44 Correct 2 ms 1236 KB Output is correct
45 Correct 243 ms 106704 KB Output is correct
46 Correct 238 ms 105604 KB Output is correct
47 Correct 242 ms 104096 KB Output is correct
48 Correct 243 ms 106832 KB Output is correct
49 Correct 238 ms 103340 KB Output is correct
50 Correct 233 ms 103496 KB Output is correct
51 Correct 240 ms 103640 KB Output is correct
52 Correct 258 ms 106076 KB Output is correct
53 Correct 245 ms 105824 KB Output is correct
54 Correct 503 ms 121984 KB Output is correct
55 Correct 453 ms 115360 KB Output is correct
56 Correct 431 ms 112092 KB Output is correct
57 Correct 403 ms 109644 KB Output is correct
58 Correct 330 ms 115968 KB Output is correct
59 Correct 359 ms 115260 KB Output is correct
60 Correct 167 ms 130056 KB Output is correct
61 Correct 238 ms 106452 KB Output is correct
62 Correct 463 ms 122092 KB Output is correct
63 Correct 243 ms 104608 KB Output is correct
64 Correct 233 ms 102788 KB Output is correct
65 Correct 483 ms 123720 KB Output is correct
66 Correct 258 ms 103476 KB Output is correct