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Submission #1093154

# Submission time Handle Problem Language Result Execution time Memory
1093154 2024-09-26T03:44:18 Z 12345678 Worst Reporter 4 (JOI21_worst_reporter4) C++17
100 / 100
 323 ms 134876 KB 
#include <bits/stdc++.h>

using namespace std;

const int nx=2e5+5;

#define ll long long

ll n, pa[nx], h[nx], c[nx], vs[nx], ans, cy[nx];
vector<ll> d[nx], g[nx];
map<ll, ll> mp[nx], dp[nx];

bool dfscy(int u, int rt)
{
    //cout<<"dfscy "<<u<<'\n';
    vs[u]=1;
    bool res=0;
    for (auto v:d[u])
    {
        if (vs[v]==2) continue;
        else if (!vs[v]) res=res||dfscy(v, rt);
        else return g[rt].push_back(u), cy[u]=1, 1;
    }
    if (res) g[rt].push_back(u), cy[u]=1;
    return res;
}

void dfsfill(int u)
{
    vs[u]=2;
    for (auto v:d[u]) if (vs[u]!=2) dfsfill(v);
}

void dfs(int u)
{
    mp[u][0]=c[u];
    for (auto v:d[u])
    {
        if (cy[v]) continue;
        dfs(v);
        if (mp[v].size()>mp[u].size()) swap(mp[u], mp[v]);
        for (auto [x, y]:mp[v]) mp[u][x]+=y;
    }
    if (cy[u]) return;
    mp[u][h[u]]+=0;
    mp[u][h[u]+1]+=c[u];
    auto itr=mp[u].find(h[u]);
    ll sm=-c[u], lst=h[u];
    while (1)
    {
        sm+=itr->second;
        if (sm>=0) break;
        itr=mp[u].erase(itr);
        itr--;
    }
    mp[u][itr->first]=sm;
}

int main()
{
    cin.tie(NULL)->sync_with_stdio(false);
    cin>>n;
    for (int i=1; i<=n; i++) cin>>pa[i]>>h[i]>>c[i];
    for (int i=1; i<=n; i++) d[pa[i]].push_back(i);
    for (int i=1; i<=n; i++) 
    {
        if (!vs[i]) 
        {
            if (dfscy(i, i))
            {
                map<ll, ll> cst;
                for (auto u:g[i])
                {
                    cst[h[u]]+=c[u];
                    dfs(u);
                    if (mp[u].size()>dp[i].size()) swap(mp[u], dp[i]);
                    for (auto [x, y]:mp[u]) dp[i][x]+=y;
                }
                //for (auto x:mp[i]) cout<<x.first<<' '<<x.second<<'\n';
                ll cur=dp[i].begin()->second, tmp=0;
                auto itr=dp[i].begin();
                for (auto [x, y]:cst)
                {
                    while (itr!=dp[i].end()&&itr->first<=x) tmp+=itr->second, itr++;
                    //cout<<"cst "<<x<<' '<<tmp<<' '<<tmp-y<<'\n';
                    cur=min(cur, tmp-y);
                }
                //cout<<"cur "<<cur<<'\n';
                ans+=cur;
            }
            dfsfill(i);
        }
    }
    /*
    cout<<"cy ";
    for (int i=1; i<=n; i++) cout<<cy[i]<<' ';
    cout<<'\n';
    */
    cout<<ans;
}

/*
3
3 1 1
1 1 1
2 1 1
*/

Compilation message

worst_reporter2.cpp: In function 'void dfs(int)':
worst_reporter2.cpp:48:18: warning: unused variable 'lst' [-Wunused-variable]
   48 |     ll sm=-c[u], lst=h[u];
      |                  ^~~

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 28504 KB Output is correct
2 Correct 12 ms 28504 KB Output is correct
3 Correct 14 ms 28464 KB Output is correct
4 Correct 17 ms 28504 KB Output is correct
5 Correct 17 ms 30296 KB Output is correct
6 Correct 17 ms 29784 KB Output is correct
7 Correct 16 ms 29528 KB Output is correct
8 Correct 17 ms 30296 KB Output is correct
9 Correct 17 ms 29788 KB Output is correct
10 Correct 18 ms 29468 KB Output is correct
11 Correct 14 ms 29276 KB Output is correct
12 Correct 19 ms 30044 KB Output is correct
13 Correct 16 ms 30044 KB Output is correct
14 Correct 15 ms 29788 KB Output is correct
15 Correct 14 ms 29744 KB Output is correct
16 Correct 17 ms 30556 KB Output is correct
17 Correct 16 ms 30024 KB Output is correct
18 Correct 14 ms 29364 KB Output is correct
19 Correct 15 ms 29788 KB Output is correct
20 Correct 15 ms 29788 KB Output is correct
21 Correct 14 ms 29788 KB Output is correct
22 Correct 15 ms 29788 KB Output is correct
23 Correct 15 ms 29616 KB Output is correct
24 Correct 16 ms 30044 KB Output is correct
25 Correct 15 ms 29788 KB Output is correct
26 Correct 19 ms 30396 KB Output is correct
27 Correct 17 ms 30044 KB Output is correct
28 Correct 15 ms 30044 KB Output is correct
29 Correct 15 ms 30044 KB Output is correct
30 Correct 16 ms 30040 KB Output is correct
31 Correct 16 ms 30040 KB Output is correct

Subtask #2
65.0 / 65.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 28504 KB Output is correct
2 Correct 12 ms 28504 KB Output is correct
3 Correct 14 ms 28464 KB Output is correct
4 Correct 17 ms 28504 KB Output is correct
5 Correct 17 ms 30296 KB Output is correct
6 Correct 17 ms 29784 KB Output is correct
7 Correct 16 ms 29528 KB Output is correct
8 Correct 17 ms 30296 KB Output is correct
9 Correct 17 ms 29788 KB Output is correct
10 Correct 18 ms 29468 KB Output is correct
11 Correct 14 ms 29276 KB Output is correct
12 Correct 19 ms 30044 KB Output is correct
13 Correct 16 ms 30044 KB Output is correct
14 Correct 15 ms 29788 KB Output is correct
15 Correct 14 ms 29744 KB Output is correct
16 Correct 17 ms 30556 KB Output is correct
17 Correct 16 ms 30024 KB Output is correct
18 Correct 14 ms 29364 KB Output is correct
19 Correct 15 ms 29788 KB Output is correct
20 Correct 15 ms 29788 KB Output is correct
21 Correct 14 ms 29788 KB Output is correct
22 Correct 15 ms 29788 KB Output is correct
23 Correct 15 ms 29616 KB Output is correct
24 Correct 16 ms 30044 KB Output is correct
25 Correct 15 ms 29788 KB Output is correct
26 Correct 19 ms 30396 KB Output is correct
27 Correct 17 ms 30044 KB Output is correct
28 Correct 15 ms 30044 KB Output is correct
29 Correct 15 ms 30044 KB Output is correct
30 Correct 16 ms 30040 KB Output is correct
31 Correct 16 ms 30040 KB Output is correct
32 Correct 21 ms 30288 KB Output is correct
33 Correct 323 ms 110420 KB Output is correct
34 Correct 247 ms 85588 KB Output is correct
35 Correct 316 ms 107344 KB Output is correct
36 Correct 243 ms 85588 KB Output is correct
37 Correct 202 ms 66748 KB Output is correct
38 Correct 153 ms 62236 KB Output is correct
39 Correct 184 ms 86900 KB Output is correct
40 Correct 158 ms 86868 KB Output is correct
41 Correct 108 ms 86772 KB Output is correct
42 Correct 152 ms 73044 KB Output is correct
43 Correct 143 ms 72784 KB Output is correct
44 Correct 301 ms 134876 KB Output is correct
45 Correct 217 ms 99228 KB Output is correct
46 Correct 99 ms 61788 KB Output is correct
47 Correct 220 ms 82668 KB Output is correct
48 Correct 128 ms 75856 KB Output is correct
49 Correct 109 ms 75932 KB Output is correct
50 Correct 199 ms 78276 KB Output is correct
51 Correct 101 ms 65732 KB Output is correct
52 Correct 236 ms 83908 KB Output is correct
53 Correct 122 ms 76744 KB Output is correct
54 Correct 202 ms 99676 KB Output is correct
55 Correct 186 ms 84968 KB Output is correct
56 Correct 157 ms 90448 KB Output is correct
57 Correct 174 ms 93392 KB Output is correct
58 Correct 171 ms 90960 KB Output is correct
59 Correct 168 ms 90968 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 28504 KB Output is correct
2 Correct 12 ms 28504 KB Output is correct
3 Correct 14 ms 28464 KB Output is correct
4 Correct 17 ms 28504 KB Output is correct
5 Correct 17 ms 30296 KB Output is correct
6 Correct 17 ms 29784 KB Output is correct
7 Correct 16 ms 29528 KB Output is correct
8 Correct 17 ms 30296 KB Output is correct
9 Correct 17 ms 29788 KB Output is correct
10 Correct 18 ms 29468 KB Output is correct
11 Correct 14 ms 29276 KB Output is correct
12 Correct 19 ms 30044 KB Output is correct
13 Correct 16 ms 30044 KB Output is correct
14 Correct 15 ms 29788 KB Output is correct
15 Correct 14 ms 29744 KB Output is correct
16 Correct 17 ms 30556 KB Output is correct
17 Correct 16 ms 30024 KB Output is correct
18 Correct 14 ms 29364 KB Output is correct
19 Correct 15 ms 29788 KB Output is correct
20 Correct 15 ms 29788 KB Output is correct
21 Correct 14 ms 29788 KB Output is correct
22 Correct 15 ms 29788 KB Output is correct
23 Correct 15 ms 29616 KB Output is correct
24 Correct 16 ms 30044 KB Output is correct
25 Correct 15 ms 29788 KB Output is correct
26 Correct 19 ms 30396 KB Output is correct
27 Correct 17 ms 30044 KB Output is correct
28 Correct 15 ms 30044 KB Output is correct
29 Correct 15 ms 30044 KB Output is correct
30 Correct 16 ms 30040 KB Output is correct
31 Correct 16 ms 30040 KB Output is correct
32 Correct 21 ms 30288 KB Output is correct
33 Correct 323 ms 110420 KB Output is correct
34 Correct 247 ms 85588 KB Output is correct
35 Correct 316 ms 107344 KB Output is correct
36 Correct 243 ms 85588 KB Output is correct
37 Correct 202 ms 66748 KB Output is correct
38 Correct 153 ms 62236 KB Output is correct
39 Correct 184 ms 86900 KB Output is correct
40 Correct 158 ms 86868 KB Output is correct
41 Correct 108 ms 86772 KB Output is correct
42 Correct 152 ms 73044 KB Output is correct
43 Correct 143 ms 72784 KB Output is correct
44 Correct 301 ms 134876 KB Output is correct
45 Correct 217 ms 99228 KB Output is correct
46 Correct 99 ms 61788 KB Output is correct
47 Correct 220 ms 82668 KB Output is correct
48 Correct 128 ms 75856 KB Output is correct
49 Correct 109 ms 75932 KB Output is correct
50 Correct 199 ms 78276 KB Output is correct
51 Correct 101 ms 65732 KB Output is correct
52 Correct 236 ms 83908 KB Output is correct
53 Correct 122 ms 76744 KB Output is correct
54 Correct 202 ms 99676 KB Output is correct
55 Correct 186 ms 84968 KB Output is correct
56 Correct 157 ms 90448 KB Output is correct
57 Correct 174 ms 93392 KB Output is correct
58 Correct 171 ms 90960 KB Output is correct
59 Correct 168 ms 90968 KB Output is correct
60 Correct 13 ms 28504 KB Output is correct
61 Correct 12 ms 28508 KB Output is correct
62 Correct 15 ms 28508 KB Output is correct
63 Correct 12 ms 28504 KB Output is correct
64 Correct 294 ms 95792 KB Output is correct
65 Correct 217 ms 79428 KB Output is correct
66 Correct 270 ms 95712 KB Output is correct
67 Correct 228 ms 79188 KB Output is correct
68 Correct 171 ms 65876 KB Output is correct
69 Correct 160 ms 62936 KB Output is correct
70 Correct 310 ms 80024 KB Output is correct
71 Correct 162 ms 69960 KB Output is correct
72 Correct 285 ms 90028 KB Output is correct
73 Correct 165 ms 77432 KB Output is correct
74 Correct 301 ms 84388 KB Output is correct
75 Correct 174 ms 72028 KB Output is correct
76 Correct 155 ms 72012 KB Output is correct
77 Correct 241 ms 85420 KB Output is correct
78 Correct 138 ms 72772 KB Output is correct
79 Correct 292 ms 100812 KB Output is correct
80 Correct 196 ms 83656 KB Output is correct
81 Correct 157 ms 73172 KB Output is correct
82 Correct 193 ms 90348 KB Output is correct
83 Correct 92 ms 66388 KB Output is correct
84 Correct 244 ms 82368 KB Output is correct
85 Correct 266 ms 82624 KB Output is correct
86 Correct 258 ms 79300 KB Output is correct
87 Correct 245 ms 82368 KB Output is correct
88 Correct 249 ms 82364 KB Output is correct