oj.uz

답안 #1043594

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1043594 2024-08-04T11:49:29 Z Whisper Mountains (NOI20_mountains) C++17
100 / 100
 161 ms 21724 KB 
#include <bits/stdc++.h>

using namespace std;
using ll = long long;

#define int long long
#define FOR(i, a, b) for (int i = a; i <= b; i++)
#define FORD(i, a, b) for (int i = b; i >= a; i --)
#define REP(i, n) for (int i = 0; i < n; ++i)
#define REPD(i, n) for (int i = n - 1; i >= 0; --i)

#define MASK(i) (1LL << (i))
#define BIT(x, i) (((x) >> (i)) & 1)

constexpr ll LINF = (1ll << 60);
constexpr int INF = (1ll << 30);
constexpr int Mod = 1e9 + 7;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

void setupIO(){
    #define name "Whisper"
    //Phu Trong from Nguyen Tat Thanh High School for gifted student
    srand(time(NULL));
    cin.tie(nullptr)->sync_with_stdio(false); cout.tie(nullptr);
    //freopen(name".inp", "r", stdin);
    //freopen(name".out", "w", stdout);
    cout << fixed << setprecision(10);
}

template <class X, class Y>
    bool minimize(X &x, const Y &y){
        X eps = 1e-9;
        if (x > y + eps) {x = y; return 1;}
        return 0;
    }

template <class X, class Y>
    bool maximize(X &x, const Y &y){
        X eps = 1e-9;
        if (x + eps < y) {x = y; return 1;}
        return 0;
    }

const int MAX = 3e5 + 5;
int nArr;
int a[MAX];

struct SegmentTree{
    int n;
    vector<int> f;
    SegmentTree(int _n = 0){
        this -> n = _n;
        f.resize((n << 1));
    }
    void modify(int p, int val){
        for (f[p += n] += val; p > 0; p >>= 1){
            f[p >> 1] = f[p] + f[p ^ 1];
        }
    }
    int query(int l, int r){
        int ans = 0;
        for(l += n, r += n + 1; l < r; l >>= 1, r >>= 1){
            if(l & 1) ans += f[l++];
            if(r & 1) ans += f[--r];
        }
        return ans;
    }
}l, r;
void Whisper(){
    cin >> nArr;
    for (int i = 1; i <= nArr; ++i) cin >> a[i];
    vector<int> compress;
    for (int i = 1; i <= nArr; ++i){
        compress.push_back(a[i]);
    }

    sort(compress.begin(), compress.end());
    compress.resize(unique(compress.begin(), compress.end()) - compress.begin());
    for (int i = 1; i <= nArr; ++i){
        a[i] = lower_bound(compress.begin(), compress.end(), a[i]) - compress.begin() + 1;
    }

    l = SegmentTree(nArr + 1), r = SegmentTree(nArr + 1);
    for (int i = 1; i <= nArr; ++i){
        r.modify(a[i], 1);
    }
    int ans = 0;
    for (int i = 1; i <= nArr; ++i){
        r.modify(a[i], -1);
        int left = l.query(1, a[i] - 1);
        int right = r.query(1, a[i] - 1);
        ans += left * right;
        l.modify(a[i], 1);
    }
    cout << ans;
}


signed main(){
    setupIO();
    int Test = 1;
//    cin >> Test;
    for ( int i = 1 ; i <= Test ; i++ ){
        Whisper();
        if (i < Test) cout << '\n';
    }
}

Subtask #1
2.0 / 2.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 81 ms 20168 KB Output is correct
3 Correct 84 ms 20704 KB Output is correct
4 Correct 79 ms 21080 KB Output is correct
5 Correct 85 ms 20248 KB Output is correct
6 Correct 81 ms 20836 KB Output is correct
7 Correct 109 ms 21180 KB Output is correct
8 Correct 82 ms 20676 KB Output is correct
9 Correct 74 ms 21704 KB Output is correct
10 Correct 73 ms 20168 KB Output is correct

Subtask #2
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 27 ms 15812 KB Output is correct
2 Correct 32 ms 15724 KB Output is correct
3 Correct 44 ms 15448 KB Output is correct
4 Correct 30 ms 16076 KB Output is correct
5 Correct 30 ms 15056 KB Output is correct
6 Correct 35 ms 16328 KB Output is correct
7 Correct 32 ms 15732 KB Output is correct
8 Correct 26 ms 15056 KB Output is correct
9 Correct 23 ms 15564 KB Output is correct
10 Correct 0 ms 348 KB Output is correct

Subtask #3
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 27 ms 15812 KB Output is correct
2 Correct 32 ms 15724 KB Output is correct
3 Correct 44 ms 15448 KB Output is correct
4 Correct 30 ms 16076 KB Output is correct
5 Correct 30 ms 15056 KB Output is correct
6 Correct 35 ms 16328 KB Output is correct
7 Correct 32 ms 15732 KB Output is correct
8 Correct 26 ms 15056 KB Output is correct
9 Correct 23 ms 15564 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 44 ms 16584 KB Output is correct
12 Correct 48 ms 15568 KB Output is correct
13 Correct 46 ms 16356 KB Output is correct
14 Correct 45 ms 15568 KB Output is correct
15 Correct 45 ms 16072 KB Output is correct
16 Correct 45 ms 16636 KB Output is correct
17 Correct 44 ms 16584 KB Output is correct
18 Correct 27 ms 15568 KB Output is correct
19 Correct 27 ms 15816 KB Output is correct
20 Correct 0 ms 348 KB Output is correct

Subtask #4
36.0 / 36.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct

Subtask #5
28.0 / 28.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 5 ms 1196 KB Output is correct
12 Correct 4 ms 1368 KB Output is correct
13 Correct 4 ms 1116 KB Output is correct
14 Correct 4 ms 1112 KB Output is correct
15 Correct 4 ms 1116 KB Output is correct
16 Correct 4 ms 1252 KB Output is correct
17 Correct 4 ms 1116 KB Output is correct
18 Correct 3 ms 1272 KB Output is correct
19 Correct 2 ms 1116 KB Output is correct
20 Correct 0 ms 348 KB Output is correct

Subtask #6
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 27 ms 15812 KB Output is correct
2 Correct 32 ms 15724 KB Output is correct
3 Correct 44 ms 15448 KB Output is correct
4 Correct 30 ms 16076 KB Output is correct
5 Correct 30 ms 15056 KB Output is correct
6 Correct 35 ms 16328 KB Output is correct
7 Correct 32 ms 15732 KB Output is correct
8 Correct 26 ms 15056 KB Output is correct
9 Correct 23 ms 15564 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 44 ms 16584 KB Output is correct
12 Correct 48 ms 15568 KB Output is correct
13 Correct 46 ms 16356 KB Output is correct
14 Correct 45 ms 15568 KB Output is correct
15 Correct 45 ms 16072 KB Output is correct
16 Correct 45 ms 16636 KB Output is correct
17 Correct 44 ms 16584 KB Output is correct
18 Correct 27 ms 15568 KB Output is correct
19 Correct 27 ms 15816 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 106 ms 16556 KB Output is correct
22 Correct 106 ms 17344 KB Output is correct
23 Correct 105 ms 17860 KB Output is correct
24 Correct 103 ms 17336 KB Output is correct
25 Correct 116 ms 16236 KB Output is correct
26 Correct 105 ms 16320 KB Output is correct
27 Correct 107 ms 16232 KB Output is correct
28 Correct 52 ms 17932 KB Output is correct
29 Correct 54 ms 17984 KB Output is correct
30 Correct 0 ms 348 KB Output is correct

Subtask #7
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 81 ms 20168 KB Output is correct
3 Correct 84 ms 20704 KB Output is correct
4 Correct 79 ms 21080 KB Output is correct
5 Correct 85 ms 20248 KB Output is correct
6 Correct 81 ms 20836 KB Output is correct
7 Correct 109 ms 21180 KB Output is correct
8 Correct 82 ms 20676 KB Output is correct
9 Correct 74 ms 21704 KB Output is correct
10 Correct 73 ms 20168 KB Output is correct
11 Correct 27 ms 15812 KB Output is correct
12 Correct 32 ms 15724 KB Output is correct
13 Correct 44 ms 15448 KB Output is correct
14 Correct 30 ms 16076 KB Output is correct
15 Correct 30 ms 15056 KB Output is correct
16 Correct 35 ms 16328 KB Output is correct
17 Correct 32 ms 15732 KB Output is correct
18 Correct 26 ms 15056 KB Output is correct
19 Correct 23 ms 15564 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 44 ms 16584 KB Output is correct
22 Correct 48 ms 15568 KB Output is correct
23 Correct 46 ms 16356 KB Output is correct
24 Correct 45 ms 15568 KB Output is correct
25 Correct 45 ms 16072 KB Output is correct
26 Correct 45 ms 16636 KB Output is correct
27 Correct 44 ms 16584 KB Output is correct
28 Correct 27 ms 15568 KB Output is correct
29 Correct 27 ms 15816 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 1 ms 348 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 0 ms 348 KB Output is correct
41 Correct 5 ms 1196 KB Output is correct
42 Correct 4 ms 1368 KB Output is correct
43 Correct 4 ms 1116 KB Output is correct
44 Correct 4 ms 1112 KB Output is correct
45 Correct 4 ms 1116 KB Output is correct
46 Correct 4 ms 1252 KB Output is correct
47 Correct 4 ms 1116 KB Output is correct
48 Correct 3 ms 1272 KB Output is correct
49 Correct 2 ms 1116 KB Output is correct
50 Correct 0 ms 348 KB Output is correct
51 Correct 106 ms 16556 KB Output is correct
52 Correct 106 ms 17344 KB Output is correct
53 Correct 105 ms 17860 KB Output is correct
54 Correct 103 ms 17336 KB Output is correct
55 Correct 116 ms 16236 KB Output is correct
56 Correct 105 ms 16320 KB Output is correct
57 Correct 107 ms 16232 KB Output is correct
58 Correct 52 ms 17932 KB Output is correct
59 Correct 54 ms 17984 KB Output is correct
60 Correct 0 ms 348 KB Output is correct
61 Correct 155 ms 20704 KB Output is correct
62 Correct 147 ms 20928 KB Output is correct
63 Correct 161 ms 21576 KB Output is correct
64 Correct 133 ms 21496 KB Output is correct
65 Correct 136 ms 21724 KB Output is correct
66 Correct 139 ms 21460 KB Output is correct
67 Correct 145 ms 21080 KB Output is correct
68 Correct 123 ms 20992 KB Output is correct
69 Correct 109 ms 17600 KB Output is correct
70 Correct 0 ms 348 KB Output is correct