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답안 #218984

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
218984 2020-04-03T10:41:22 Z nvmdava 별자리 3 (JOI20_constellation3) C++17
100 / 100
 290 ms 56680 KB 
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define ff first
#define ss second
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
#define N 200005
#define INF 0x3f3f3f3f
#define MOD 1000000007LL

int a[N];
int l[N], r[N];
vector<pair<int, int> > st[N], tmp;

map<int, ll> ans[N];
ll c[N];

ll res = 0;

void insert(int v, int y, ll s){
    if((--ans[v].upper_bound(y)) -> ss >= s) return;
    ans[v][y] = s;
    auto it = ans[v].upper_bound(y);
    while(it != ans[v].end() && it -> ss <= s)
        it = ans[v].erase(it);
}

void dfs(int v){
    int l = ::l[v];
    int r = ::r[v];
    if(l)
        dfs(l);
    if(r)
        dfs(r);

    ll L, R;

    auto it = --ans[l].upper_bound(a[v]);
    while(ans[l].begin() != it)
        ans[l].erase(ans[l].begin());
    L = c[l] + it -> ss;
    it = --ans[r].upper_bound(a[v]);
    while(ans[r].begin() != it)
        ans[r].erase(ans[r].begin());
    R = c[r] + it -> ss;
    c[l] += R;
    c[r] += L;

    if(ans[l].size() > ans[r].size())
        swap(l, r);

    swap(ans[r], ans[v]);
    swap(c[r], c[v]);

    if(!l)
        c[0] = 0;
    else
        for(auto& x : ans[l])
            insert(v, x.ff, x.ss + c[l] - c[v]);
    for(auto& x : st[v])
        insert(v, x.ff, x.ss + L + R - c[v]);
}

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    int n;
    cin>>n;
    ans[0][1] = 0;
    for(int i = 1; i <= n; ++i){
        ans[i][1] = 0;
        cin>>a[i];
        while(!tmp.empty() && tmp.back().ff < a[i]){
            l[i] = tmp.back().ss;
            tmp.pop_back();
        }
        if(!tmp.empty())
            r[tmp.back().ss] = i;
        tmp.push_back({a[i], i});
    }

    int q;
    cin>>q;
    while(q--){
        int x, y, s;
        cin>>x>>y>>s;
        res += s;
        st[x].push_back({y, s});
    }

    dfs(tmp[0].ss);

    res -= c[tmp[0].ss] + (--ans[tmp[0].ss].end()) -> ss;

    cout<<res;
}

Subtask #1
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 13 ms 14464 KB Output is correct
2 Correct 14 ms 14464 KB Output is correct
3 Correct 13 ms 14464 KB Output is correct
4 Correct 12 ms 14464 KB Output is correct
5 Correct 13 ms 14464 KB Output is correct
6 Correct 13 ms 14464 KB Output is correct
7 Correct 14 ms 14464 KB Output is correct
8 Correct 13 ms 14532 KB Output is correct
9 Correct 13 ms 14464 KB Output is correct
10 Correct 13 ms 14464 KB Output is correct
11 Correct 13 ms 14464 KB Output is correct
12 Correct 13 ms 14464 KB Output is correct
13 Correct 13 ms 14464 KB Output is correct
14 Correct 13 ms 14464 KB Output is correct
15 Correct 14 ms 14464 KB Output is correct
16 Correct 13 ms 14464 KB Output is correct
17 Correct 13 ms 14464 KB Output is correct
18 Correct 13 ms 14464 KB Output is correct
19 Correct 13 ms 14464 KB Output is correct
20 Correct 13 ms 14464 KB Output is correct
21 Correct 13 ms 14464 KB Output is correct
22 Correct 13 ms 14464 KB Output is correct

Subtask #2
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 13 ms 14464 KB Output is correct
2 Correct 14 ms 14464 KB Output is correct
3 Correct 13 ms 14464 KB Output is correct
4 Correct 12 ms 14464 KB Output is correct
5 Correct 13 ms 14464 KB Output is correct
6 Correct 13 ms 14464 KB Output is correct
7 Correct 14 ms 14464 KB Output is correct
8 Correct 13 ms 14532 KB Output is correct
9 Correct 13 ms 14464 KB Output is correct
10 Correct 13 ms 14464 KB Output is correct
11 Correct 13 ms 14464 KB Output is correct
12 Correct 13 ms 14464 KB Output is correct
13 Correct 13 ms 14464 KB Output is correct
14 Correct 13 ms 14464 KB Output is correct
15 Correct 14 ms 14464 KB Output is correct
16 Correct 13 ms 14464 KB Output is correct
17 Correct 13 ms 14464 KB Output is correct
18 Correct 13 ms 14464 KB Output is correct
19 Correct 13 ms 14464 KB Output is correct
20 Correct 13 ms 14464 KB Output is correct
21 Correct 13 ms 14464 KB Output is correct
22 Correct 13 ms 14464 KB Output is correct
23 Correct 14 ms 14592 KB Output is correct
24 Correct 14 ms 14720 KB Output is correct
25 Correct 14 ms 14720 KB Output is correct
26 Correct 14 ms 14720 KB Output is correct
27 Correct 15 ms 14720 KB Output is correct
28 Correct 14 ms 14720 KB Output is correct
29 Correct 23 ms 14720 KB Output is correct
30 Correct 15 ms 14720 KB Output is correct
31 Correct 15 ms 14592 KB Output is correct
32 Correct 15 ms 14848 KB Output is correct
33 Correct 14 ms 14848 KB Output is correct
34 Correct 14 ms 14720 KB Output is correct
35 Correct 15 ms 14720 KB Output is correct
36 Correct 14 ms 14720 KB Output is correct
37 Correct 17 ms 14968 KB Output is correct
38 Correct 14 ms 14848 KB Output is correct
39 Correct 15 ms 14720 KB Output is correct
40 Correct 14 ms 14848 KB Output is correct
41 Correct 14 ms 14720 KB Output is correct
42 Correct 14 ms 14720 KB Output is correct
43 Correct 15 ms 14848 KB Output is correct
44 Correct 15 ms 14720 KB Output is correct

Subtask #3
65.0 / 65.0

# 결과 실행 시간 메모리 Grader output
1 Correct 13 ms 14464 KB Output is correct
2 Correct 14 ms 14464 KB Output is correct
3 Correct 13 ms 14464 KB Output is correct
4 Correct 12 ms 14464 KB Output is correct
5 Correct 13 ms 14464 KB Output is correct
6 Correct 13 ms 14464 KB Output is correct
7 Correct 14 ms 14464 KB Output is correct
8 Correct 13 ms 14532 KB Output is correct
9 Correct 13 ms 14464 KB Output is correct
10 Correct 13 ms 14464 KB Output is correct
11 Correct 13 ms 14464 KB Output is correct
12 Correct 13 ms 14464 KB Output is correct
13 Correct 13 ms 14464 KB Output is correct
14 Correct 13 ms 14464 KB Output is correct
15 Correct 14 ms 14464 KB Output is correct
16 Correct 13 ms 14464 KB Output is correct
17 Correct 13 ms 14464 KB Output is correct
18 Correct 13 ms 14464 KB Output is correct
19 Correct 13 ms 14464 KB Output is correct
20 Correct 13 ms 14464 KB Output is correct
21 Correct 13 ms 14464 KB Output is correct
22 Correct 13 ms 14464 KB Output is correct
23 Correct 14 ms 14592 KB Output is correct
24 Correct 14 ms 14720 KB Output is correct
25 Correct 14 ms 14720 KB Output is correct
26 Correct 14 ms 14720 KB Output is correct
27 Correct 15 ms 14720 KB Output is correct
28 Correct 14 ms 14720 KB Output is correct
29 Correct 23 ms 14720 KB Output is correct
30 Correct 15 ms 14720 KB Output is correct
31 Correct 15 ms 14592 KB Output is correct
32 Correct 15 ms 14848 KB Output is correct
33 Correct 14 ms 14848 KB Output is correct
34 Correct 14 ms 14720 KB Output is correct
35 Correct 15 ms 14720 KB Output is correct
36 Correct 14 ms 14720 KB Output is correct
37 Correct 17 ms 14968 KB Output is correct
38 Correct 14 ms 14848 KB Output is correct
39 Correct 15 ms 14720 KB Output is correct
40 Correct 14 ms 14848 KB Output is correct
41 Correct 14 ms 14720 KB Output is correct
42 Correct 14 ms 14720 KB Output is correct
43 Correct 15 ms 14848 KB Output is correct
44 Correct 15 ms 14720 KB Output is correct
45 Correct 210 ms 36216 KB Output is correct
46 Correct 193 ms 35832 KB Output is correct
47 Correct 197 ms 35704 KB Output is correct
48 Correct 197 ms 36132 KB Output is correct
49 Correct 214 ms 35424 KB Output is correct
50 Correct 190 ms 35448 KB Output is correct
51 Correct 198 ms 35576 KB Output is correct
52 Correct 206 ms 36088 KB Output is correct
53 Correct 196 ms 35832 KB Output is correct
54 Correct 204 ms 53352 KB Output is correct
55 Correct 218 ms 49904 KB Output is correct
56 Correct 208 ms 47856 KB Output is correct
57 Correct 204 ms 46452 KB Output is correct
58 Correct 186 ms 45928 KB Output is correct
59 Correct 184 ms 45548 KB Output is correct
60 Correct 150 ms 55160 KB Output is correct
61 Correct 235 ms 45672 KB Output is correct
62 Correct 290 ms 56300 KB Output is correct
63 Correct 213 ms 43768 KB Output is correct
64 Correct 229 ms 44968 KB Output is correct
65 Correct 282 ms 56680 KB Output is correct
66 Correct 223 ms 44408 KB Output is correct