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답안 #527677

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
527677 2022-02-18T02:04:12 Z joelau Izbori (COCI22_izbori) C++14
110 / 110
 569 ms 73024 KB 
#include <bits/stdc++.h>
using namespace std;

long long N,A[200005];
vector<long long> A1, lst[200005];

struct node {
    long long s,e,m,v; pair<long long,long long> lazy; node *l, *r;
    node (long long S, long long E) {
        s = S, e = E, m = (s+e)/2, v = 0, lazy = make_pair(0,0);
        if (s != e) l = new node(s,m), r = new node(m+1,e);
    }
    void propo() {
        if (lazy == make_pair(0ll,0ll)) return;
        v += (e-s+1) * (e-s) / 2 * lazy.first + (e-s+1) * lazy.second;
        if (s != e) {
            l->lazy.first += lazy.first, r->lazy.first += lazy.first;
            l->lazy.second += lazy.second, r->lazy.second += lazy.second + (m-s+1) * lazy.first;
        }
        lazy = make_pair(0,0);
    }
    void update (long long x, long long y, long long a, long long b) {
        propo();
        if (s == x && e == y) lazy.first += a, lazy.second += b;
        else {
            if (y <= m) l -> update(x,y,a,b);
            else if (x > m) r -> update(x,y,a,b);
            else l -> update(x,m,a,b), r -> update(m+1,y,a,b+(m-x+1)*a);
            l->propo(), r->propo();
            v = l->v + r->v;
        }
    }
    long long query (long long x, long long y) {
        propo();
        if (s == x && e == y) return v;
        else if (y <= m) return l -> query(x,y);
        else if (x > m) return r -> query(x,y);
        else return l->query(x,m) + r->query(m+1,y);
    }
}*root;

int main() {
    ios_base::sync_with_stdio(false); cin.tie(NULL);
    cin >> N;
    for (long long i = 0; i < N; ++i) {
        cin >> A[i];
        A1.push_back(A[i]);
    }
    sort(A1.begin(),A1.end());
    A1.resize(unique(A1.begin(),A1.end())-A1.begin());
    for (long long i = 0; i < N; ++i) {
        A[i] = lower_bound(A1.begin(),A1.end(),A[i])-A1.begin();
        lst[A[i]].push_back(lst[A[i]].size()*2-i+1);
    }
    root = new node(0,N*2);
    long long ans = 0;
    for (long long i = 0; i < N; ++i) if (!lst[i].empty()) {
        root -> update(N+lst[i][0]-1,N,1,1);
        root -> update(N+1,N*2,0,2-lst[i][0]);
        for (long long j = 1; j < lst[i].size(); ++j) {
            ans += root -> query(N+lst[i][j]-2,N+lst[i][j-1]-1);
            root -> update(N+lst[i][j]-1,N+lst[i][j-1],1,1);
            root -> update(N+lst[i][j-1]+1,N*2,0,lst[i][j-1]-lst[i][j]+2);
        }
        ans += root -> query(lst[i].size()*2-1,N+lst[i].back()-1);
        root -> update(N+lst[i][0]-1,N,-1,-1);
        root -> update(N+1,N*2,0,lst[i][0]-2);
        for (long long j = 1; j < lst[i].size(); ++j) {
            root -> update(N+lst[i][j]-1,N+lst[i][j-1],-1,-1);
            root -> update(N+lst[i][j-1]+1,N*2,0,lst[i][j]-lst[i][j-1]-2);
        }
    }
    cout << ans;

    return 0;
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:60:33: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   60 |         for (long long j = 1; j < lst[i].size(); ++j) {
      |                               ~~^~~~~~~~~~~~~~~
Main.cpp:68:33: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   68 |         for (long long j = 1; j < lst[i].size(); ++j) {
      |                               ~~^~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4940 KB Output is correct
2 Correct 3 ms 5000 KB Output is correct
3 Correct 3 ms 5016 KB Output is correct
4 Correct 3 ms 5020 KB Output is correct
5 Correct 3 ms 5068 KB Output is correct
6 Correct 3 ms 5028 KB Output is correct

Subtask #2
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4940 KB Output is correct
2 Correct 3 ms 5000 KB Output is correct
3 Correct 3 ms 5016 KB Output is correct
4 Correct 3 ms 5020 KB Output is correct
5 Correct 3 ms 5068 KB Output is correct
6 Correct 3 ms 5028 KB Output is correct
7 Correct 4 ms 5284 KB Output is correct
8 Correct 2 ms 4940 KB Output is correct
9 Correct 6 ms 5716 KB Output is correct
10 Correct 5 ms 5664 KB Output is correct
11 Correct 5 ms 5708 KB Output is correct
12 Correct 5 ms 5708 KB Output is correct
13 Correct 6 ms 5656 KB Output is correct
14 Correct 5 ms 5672 KB Output is correct
15 Correct 5 ms 5708 KB Output is correct
16 Correct 5 ms 5668 KB Output is correct
17 Correct 4 ms 5580 KB Output is correct

Subtask #3
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 125 ms 50148 KB Output is correct
2 Correct 184 ms 63528 KB Output is correct
3 Correct 102 ms 39012 KB Output is correct
4 Correct 175 ms 66476 KB Output is correct
5 Correct 183 ms 68784 KB Output is correct
6 Correct 190 ms 72284 KB Output is correct
7 Correct 241 ms 72280 KB Output is correct
8 Correct 191 ms 72320 KB Output is correct
9 Correct 214 ms 72484 KB Output is correct
10 Correct 198 ms 72504 KB Output is correct
11 Correct 197 ms 72360 KB Output is correct

Subtask #4
70.0 / 70.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4940 KB Output is correct
2 Correct 3 ms 5000 KB Output is correct
3 Correct 3 ms 5016 KB Output is correct
4 Correct 3 ms 5020 KB Output is correct
5 Correct 3 ms 5068 KB Output is correct
6 Correct 3 ms 5028 KB Output is correct
7 Correct 4 ms 5284 KB Output is correct
8 Correct 2 ms 4940 KB Output is correct
9 Correct 6 ms 5716 KB Output is correct
10 Correct 5 ms 5664 KB Output is correct
11 Correct 5 ms 5708 KB Output is correct
12 Correct 5 ms 5708 KB Output is correct
13 Correct 6 ms 5656 KB Output is correct
14 Correct 5 ms 5672 KB Output is correct
15 Correct 5 ms 5708 KB Output is correct
16 Correct 5 ms 5668 KB Output is correct
17 Correct 4 ms 5580 KB Output is correct
18 Correct 125 ms 50148 KB Output is correct
19 Correct 184 ms 63528 KB Output is correct
20 Correct 102 ms 39012 KB Output is correct
21 Correct 175 ms 66476 KB Output is correct
22 Correct 183 ms 68784 KB Output is correct
23 Correct 190 ms 72284 KB Output is correct
24 Correct 241 ms 72280 KB Output is correct
25 Correct 191 ms 72320 KB Output is correct
26 Correct 214 ms 72484 KB Output is correct
27 Correct 198 ms 72504 KB Output is correct
28 Correct 197 ms 72360 KB Output is correct
29 Correct 227 ms 72536 KB Output is correct
30 Correct 62 ms 18548 KB Output is correct
31 Correct 140 ms 32192 KB Output is correct
32 Correct 459 ms 71056 KB Output is correct
33 Correct 162 ms 33912 KB Output is correct
34 Correct 159 ms 35284 KB Output is correct
35 Correct 115 ms 24840 KB Output is correct
36 Correct 53 ms 16880 KB Output is correct
37 Correct 67 ms 19404 KB Output is correct
38 Correct 260 ms 72504 KB Output is correct
39 Correct 266 ms 72712 KB Output is correct
40 Correct 261 ms 72504 KB Output is correct
41 Correct 257 ms 72760 KB Output is correct
42 Correct 280 ms 72764 KB Output is correct
43 Correct 337 ms 72844 KB Output is correct
44 Correct 368 ms 73024 KB Output is correct
45 Correct 338 ms 72932 KB Output is correct
46 Correct 370 ms 72968 KB Output is correct
47 Correct 338 ms 72932 KB Output is correct
48 Correct 495 ms 72584 KB Output is correct
49 Correct 489 ms 72528 KB Output is correct
50 Correct 558 ms 72972 KB Output is correct
51 Correct 569 ms 73016 KB Output is correct
52 Correct 496 ms 72428 KB Output is correct
53 Correct 463 ms 72332 KB Output is correct
54 Correct 527 ms 72552 KB Output is correct