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답안 #218980

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
218980 2020-04-03T10:35:47 Z nvmdava 별자리 3 (JOI20_constellation3) C++17
100 / 100
 328 ms 75384 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;

    L = c[l] + (--ans[l].upper_bound(a[v])) -> ss;
    R = c[r] + (--ans[r].upper_bound(a[v])) -> 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]);

    c[0] = 0;
    ans[0].clear();
    ans[0][1] = 0;
    
    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 13 ms 14464 KB Output is correct
3 Correct 13 ms 14464 KB Output is correct
4 Correct 13 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 13 ms 14464 KB Output is correct
8 Correct 13 ms 14464 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 15 ms 14464 KB Output is correct
13 Correct 13 ms 14464 KB Output is correct
14 Correct 14 ms 14592 KB Output is correct
15 Correct 14 ms 14464 KB Output is correct
16 Correct 13 ms 14592 KB Output is correct
17 Correct 13 ms 14464 KB Output is correct
18 Correct 13 ms 14592 KB Output is correct
19 Correct 13 ms 14464 KB Output is correct
20 Correct 17 ms 14464 KB Output is correct
21 Correct 13 ms 14592 KB Output is correct
22 Correct 14 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 13 ms 14464 KB Output is correct
3 Correct 13 ms 14464 KB Output is correct
4 Correct 13 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 13 ms 14464 KB Output is correct
8 Correct 13 ms 14464 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 15 ms 14464 KB Output is correct
13 Correct 13 ms 14464 KB Output is correct
14 Correct 14 ms 14592 KB Output is correct
15 Correct 14 ms 14464 KB Output is correct
16 Correct 13 ms 14592 KB Output is correct
17 Correct 13 ms 14464 KB Output is correct
18 Correct 13 ms 14592 KB Output is correct
19 Correct 13 ms 14464 KB Output is correct
20 Correct 17 ms 14464 KB Output is correct
21 Correct 13 ms 14592 KB Output is correct
22 Correct 14 ms 14464 KB Output is correct
23 Correct 18 ms 14912 KB Output is correct
24 Correct 14 ms 14720 KB Output is correct
25 Correct 15 ms 14720 KB Output is correct
26 Correct 15 ms 14720 KB Output is correct
27 Correct 15 ms 14720 KB Output is correct
28 Correct 15 ms 14720 KB Output is correct
29 Correct 15 ms 14720 KB Output is correct
30 Correct 15 ms 14720 KB Output is correct
31 Correct 16 ms 14720 KB Output is correct
32 Correct 14 ms 14976 KB Output is correct
33 Correct 19 ms 14976 KB Output is correct
34 Correct 15 ms 14848 KB Output is correct
35 Correct 15 ms 14848 KB Output is correct
36 Correct 14 ms 14976 KB Output is correct
37 Correct 15 ms 14848 KB Output is correct
38 Correct 14 ms 15104 KB Output is correct
39 Correct 16 ms 14848 KB Output is correct
40 Correct 15 ms 14976 KB Output is correct
41 Correct 15 ms 14720 KB Output is correct
42 Correct 16 ms 14848 KB Output is correct
43 Correct 17 ms 14976 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 13 ms 14464 KB Output is correct
3 Correct 13 ms 14464 KB Output is correct
4 Correct 13 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 13 ms 14464 KB Output is correct
8 Correct 13 ms 14464 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 15 ms 14464 KB Output is correct
13 Correct 13 ms 14464 KB Output is correct
14 Correct 14 ms 14592 KB Output is correct
15 Correct 14 ms 14464 KB Output is correct
16 Correct 13 ms 14592 KB Output is correct
17 Correct 13 ms 14464 KB Output is correct
18 Correct 13 ms 14592 KB Output is correct
19 Correct 13 ms 14464 KB Output is correct
20 Correct 17 ms 14464 KB Output is correct
21 Correct 13 ms 14592 KB Output is correct
22 Correct 14 ms 14464 KB Output is correct
23 Correct 18 ms 14912 KB Output is correct
24 Correct 14 ms 14720 KB Output is correct
25 Correct 15 ms 14720 KB Output is correct
26 Correct 15 ms 14720 KB Output is correct
27 Correct 15 ms 14720 KB Output is correct
28 Correct 15 ms 14720 KB Output is correct
29 Correct 15 ms 14720 KB Output is correct
30 Correct 15 ms 14720 KB Output is correct
31 Correct 16 ms 14720 KB Output is correct
32 Correct 14 ms 14976 KB Output is correct
33 Correct 19 ms 14976 KB Output is correct
34 Correct 15 ms 14848 KB Output is correct
35 Correct 15 ms 14848 KB Output is correct
36 Correct 14 ms 14976 KB Output is correct
37 Correct 15 ms 14848 KB Output is correct
38 Correct 14 ms 15104 KB Output is correct
39 Correct 16 ms 14848 KB Output is correct
40 Correct 15 ms 14976 KB Output is correct
41 Correct 15 ms 14720 KB Output is correct
42 Correct 16 ms 14848 KB Output is correct
43 Correct 17 ms 14976 KB Output is correct
44 Correct 15 ms 14720 KB Output is correct
45 Correct 237 ms 41720 KB Output is correct
46 Correct 229 ms 41336 KB Output is correct
47 Correct 251 ms 41208 KB Output is correct
48 Correct 245 ms 41612 KB Output is correct
49 Correct 257 ms 40956 KB Output is correct
50 Correct 240 ms 40788 KB Output is correct
51 Correct 237 ms 41208 KB Output is correct
52 Correct 237 ms 41464 KB Output is correct
53 Correct 249 ms 41208 KB Output is correct
54 Correct 242 ms 63256 KB Output is correct
55 Correct 240 ms 57452 KB Output is correct
56 Correct 239 ms 54256 KB Output is correct
57 Correct 239 ms 51956 KB Output is correct
58 Correct 207 ms 53404 KB Output is correct
59 Correct 208 ms 52972 KB Output is correct
60 Correct 289 ms 75384 KB Output is correct
61 Correct 240 ms 48248 KB Output is correct
62 Correct 328 ms 67564 KB Output is correct
63 Correct 232 ms 46200 KB Output is correct
64 Correct 247 ms 47352 KB Output is correct
65 Correct 325 ms 68332 KB Output is correct
66 Correct 244 ms 46712 KB Output is correct