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답안 #805214

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
805214 2023-08-03T14:09:03 Z TimDee Roller Coaster Railroad (IOI16_railroad) C++17
100 / 100
 926 ms 69032 KB 
#include "railroad.h"
#include <bits/stdc++.h>
using namespace std;
#define forn(i,n) for(int i=0;i<n;++i)
#define pb push_back
#define all(x) x.begin(), x.end()
using ll = long long;
#define pi pair<int,int>
#define f first
#define s second

struct DSU {
    vector<int> p,sz;
    DSU(int n) {
        forn(i,n) p.pb(i), sz.pb(1);
    }
    int get(int u) {
        return p[u]==u?u:get(p[u]);
    }
    void uni(int u, int v) {
        u=get(u),v=get(v);
        if (u==v) return;
        if (sz[u]<sz[v]) swap(u,v);
        sz[u]+=sz[v];
        p[v]=u;
    }
};

struct edge {
    int w, u, v;
};
bool foo(edge a, edge b) {
    return a.w<b.w;
}

ll plan_roller_coaster(vector<int> s, vector<int> t) {
    int n=s.size();

    int mx=0, mn=1e9+7; 
    for(auto&x:s) mx=max(mx,x), mn=min(mn,x);
    for(auto&x:t) mx=max(mx,x), mn=min(mn,x);
    s.pb(mx);
    t.pb(mn);
    ++n;

    int m=0;
    set<int> st; forn(i,n) st.insert(s[i]), st.insert(t[i]);
    map<int,int> c, d;
    for(auto&x:st) {
        d[m]=x;
        c[x]=m++;
    }

    vector<int> pr(m);
    forn(i,n) s[i]=c[s[i]], t[i]=c[t[i]];

    DSU dsu(m);
    forn(i,n) {
        pr[t[i]]++;
        pr[s[i]]--;
        dsu.uni(s[i],t[i]);
    }
    for(int i=1; i<m; ++i) pr[i]+=pr[i-1];

    ll ans=0;
    forn(i,m) {
        if (pr[i]<0) ans-=1ll*pr[i]*(d[i+1]-d[i]);
        if (pr[i]) dsu.uni(i,i+1);
    }
    vector<edge> e;
    forn(i,m-1) {
        if (dsu.get(i)!=dsu.get(i+1)) e.pb({d[i+1]-d[i],i,i+1});
    }
    sort(all(e),foo);
    for(auto&x:e) {
        if (dsu.get(x.u)==dsu.get(x.v)) continue;
        dsu.uni(x.u,x.v);
        ans+=x.w;
    }
    return ans;
}

Subtask #1
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB n = 2
2 Correct 0 ms 212 KB n = 2
3 Correct 1 ms 212 KB n = 2
4 Correct 0 ms 212 KB n = 2
5 Correct 0 ms 212 KB n = 2
6 Correct 0 ms 212 KB n = 2
7 Correct 1 ms 212 KB n = 3
8 Correct 0 ms 212 KB n = 3
9 Correct 0 ms 212 KB n = 3
10 Correct 0 ms 212 KB n = 8
11 Correct 1 ms 212 KB n = 8
12 Correct 0 ms 212 KB n = 8
13 Correct 0 ms 212 KB n = 8
14 Correct 0 ms 212 KB n = 8
15 Correct 0 ms 212 KB n = 8
16 Correct 0 ms 212 KB n = 8
17 Correct 0 ms 212 KB n = 8
18 Correct 0 ms 212 KB n = 8
19 Correct 0 ms 212 KB n = 3
20 Correct 0 ms 212 KB n = 7
21 Correct 0 ms 212 KB n = 8
22 Correct 0 ms 212 KB n = 8
23 Correct 1 ms 212 KB n = 8
24 Correct 0 ms 212 KB n = 8
25 Correct 1 ms 212 KB n = 8

Subtask #2
23.0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB n = 2
2 Correct 0 ms 212 KB n = 2
3 Correct 1 ms 212 KB n = 2
4 Correct 0 ms 212 KB n = 2
5 Correct 0 ms 212 KB n = 2
6 Correct 0 ms 212 KB n = 2
7 Correct 1 ms 212 KB n = 3
8 Correct 0 ms 212 KB n = 3
9 Correct 0 ms 212 KB n = 3
10 Correct 0 ms 212 KB n = 8
11 Correct 1 ms 212 KB n = 8
12 Correct 0 ms 212 KB n = 8
13 Correct 0 ms 212 KB n = 8
14 Correct 0 ms 212 KB n = 8
15 Correct 0 ms 212 KB n = 8
16 Correct 0 ms 212 KB n = 8
17 Correct 0 ms 212 KB n = 8
18 Correct 0 ms 212 KB n = 8
19 Correct 0 ms 212 KB n = 3
20 Correct 0 ms 212 KB n = 7
21 Correct 0 ms 212 KB n = 8
22 Correct 0 ms 212 KB n = 8
23 Correct 1 ms 212 KB n = 8
24 Correct 0 ms 212 KB n = 8
25 Correct 1 ms 212 KB n = 8
26 Correct 0 ms 212 KB n = 8
27 Correct 0 ms 212 KB n = 8
28 Correct 1 ms 212 KB n = 8
29 Correct 0 ms 212 KB n = 16
30 Correct 0 ms 212 KB n = 16
31 Correct 0 ms 212 KB n = 16
32 Correct 0 ms 212 KB n = 16
33 Correct 0 ms 212 KB n = 16
34 Correct 0 ms 212 KB n = 16
35 Correct 0 ms 212 KB n = 16
36 Correct 1 ms 212 KB n = 15
37 Correct 0 ms 212 KB n = 8
38 Correct 0 ms 212 KB n = 16
39 Correct 0 ms 212 KB n = 16
40 Correct 0 ms 212 KB n = 9
41 Correct 0 ms 212 KB n = 16
42 Correct 0 ms 212 KB n = 16
43 Correct 1 ms 212 KB n = 16
44 Correct 1 ms 212 KB n = 9
45 Correct 1 ms 212 KB n = 15
46 Correct 0 ms 212 KB n = 16
47 Correct 0 ms 212 KB n = 16
48 Correct 0 ms 212 KB n = 16

Subtask #3
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 744 ms 65816 KB n = 199999
2 Correct 786 ms 65768 KB n = 199991
3 Correct 926 ms 65804 KB n = 199993
4 Correct 498 ms 49772 KB n = 152076
5 Correct 251 ms 31144 KB n = 93249
6 Correct 518 ms 55160 KB n = 199910
7 Correct 614 ms 64420 KB n = 199999
8 Correct 502 ms 55532 KB n = 199997
9 Correct 500 ms 55664 KB n = 171294
10 Correct 408 ms 46420 KB n = 140872
11 Correct 504 ms 55960 KB n = 199886
12 Correct 628 ms 64852 KB n = 199996
13 Correct 519 ms 57768 KB n = 200000
14 Correct 549 ms 64600 KB n = 199998
15 Correct 559 ms 63580 KB n = 200000
16 Correct 583 ms 65600 KB n = 199998
17 Correct 695 ms 65860 KB n = 200000
18 Correct 611 ms 61480 KB n = 190000
19 Correct 511 ms 57732 KB n = 177777
20 Correct 243 ms 33124 KB n = 100000
21 Correct 615 ms 65848 KB n = 200000
22 Correct 679 ms 69032 KB n = 200000
23 Correct 727 ms 65836 KB n = 200000

Subtask #4
36.0 / 36.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB n = 2
2 Correct 0 ms 212 KB n = 2
3 Correct 1 ms 212 KB n = 2
4 Correct 0 ms 212 KB n = 2
5 Correct 0 ms 212 KB n = 2
6 Correct 0 ms 212 KB n = 2
7 Correct 1 ms 212 KB n = 3
8 Correct 0 ms 212 KB n = 3
9 Correct 0 ms 212 KB n = 3
10 Correct 0 ms 212 KB n = 8
11 Correct 1 ms 212 KB n = 8
12 Correct 0 ms 212 KB n = 8
13 Correct 0 ms 212 KB n = 8
14 Correct 0 ms 212 KB n = 8
15 Correct 0 ms 212 KB n = 8
16 Correct 0 ms 212 KB n = 8
17 Correct 0 ms 212 KB n = 8
18 Correct 0 ms 212 KB n = 8
19 Correct 0 ms 212 KB n = 3
20 Correct 0 ms 212 KB n = 7
21 Correct 0 ms 212 KB n = 8
22 Correct 0 ms 212 KB n = 8
23 Correct 1 ms 212 KB n = 8
24 Correct 0 ms 212 KB n = 8
25 Correct 1 ms 212 KB n = 8
26 Correct 0 ms 212 KB n = 8
27 Correct 0 ms 212 KB n = 8
28 Correct 1 ms 212 KB n = 8
29 Correct 0 ms 212 KB n = 16
30 Correct 0 ms 212 KB n = 16
31 Correct 0 ms 212 KB n = 16
32 Correct 0 ms 212 KB n = 16
33 Correct 0 ms 212 KB n = 16
34 Correct 0 ms 212 KB n = 16
35 Correct 0 ms 212 KB n = 16
36 Correct 1 ms 212 KB n = 15
37 Correct 0 ms 212 KB n = 8
38 Correct 0 ms 212 KB n = 16
39 Correct 0 ms 212 KB n = 16
40 Correct 0 ms 212 KB n = 9
41 Correct 0 ms 212 KB n = 16
42 Correct 0 ms 212 KB n = 16
43 Correct 1 ms 212 KB n = 16
44 Correct 1 ms 212 KB n = 9
45 Correct 1 ms 212 KB n = 15
46 Correct 0 ms 212 KB n = 16
47 Correct 0 ms 212 KB n = 16
48 Correct 0 ms 212 KB n = 16
49 Correct 744 ms 65816 KB n = 199999
50 Correct 786 ms 65768 KB n = 199991
51 Correct 926 ms 65804 KB n = 199993
52 Correct 498 ms 49772 KB n = 152076
53 Correct 251 ms 31144 KB n = 93249
54 Correct 518 ms 55160 KB n = 199910
55 Correct 614 ms 64420 KB n = 199999
56 Correct 502 ms 55532 KB n = 199997
57 Correct 500 ms 55664 KB n = 171294
58 Correct 408 ms 46420 KB n = 140872
59 Correct 504 ms 55960 KB n = 199886
60 Correct 628 ms 64852 KB n = 199996
61 Correct 519 ms 57768 KB n = 200000
62 Correct 549 ms 64600 KB n = 199998
63 Correct 559 ms 63580 KB n = 200000
64 Correct 583 ms 65600 KB n = 199998
65 Correct 695 ms 65860 KB n = 200000
66 Correct 611 ms 61480 KB n = 190000
67 Correct 511 ms 57732 KB n = 177777
68 Correct 243 ms 33124 KB n = 100000
69 Correct 615 ms 65848 KB n = 200000
70 Correct 679 ms 69032 KB n = 200000
71 Correct 727 ms 65836 KB n = 200000
72 Correct 605 ms 65832 KB n = 200000
73 Correct 674 ms 65816 KB n = 200000
74 Correct 705 ms 65824 KB n = 200000
75 Correct 677 ms 65860 KB n = 200000
76 Correct 643 ms 65744 KB n = 200000
77 Correct 291 ms 35244 KB n = 200000
78 Correct 379 ms 37120 KB n = 200000
79 Correct 562 ms 59720 KB n = 184307
80 Correct 165 ms 25564 KB n = 76040
81 Correct 540 ms 56000 KB n = 199981
82 Correct 539 ms 64780 KB n = 199994
83 Correct 518 ms 57840 KB n = 199996
84 Correct 521 ms 64680 KB n = 199998
85 Correct 553 ms 63632 KB n = 200000
86 Correct 572 ms 65572 KB n = 199998
87 Correct 635 ms 65820 KB n = 200000
88 Correct 653 ms 65820 KB n = 200000
89 Correct 609 ms 65816 KB n = 200000
90 Correct 638 ms 65820 KB n = 200000
91 Correct 672 ms 69024 KB n = 200000
92 Correct 726 ms 65828 KB n = 200000