oj.uz

Submission #1082972

# Submission time Handle Problem Language Result Execution time Memory
1082972 2024-09-02T09:12:38 Z Mahog Izbori (COCI22_izbori) C++17
110 / 110
 1779 ms 9068 KB 
#pragma GCC optimize("Ofast,unroll-loops")
#pragma GCC target("avx,avx2,fma")
 
#include <bits/stdc++.h>
using namespace std;

struct fenwick {
    vector<int> b;
    int n = 0;
    int m = 0;
    int o = 0;
    
    void start(int x) {
        n = x;
        b.resize(x + 1, o);
    }
    
    void insertVal(int x) {
        m++;
        update(m, x);
    }
        
    void update(int idx, int x) {
    	for (; idx <= n; idx += idx & -idx) b[idx] += x;
    }
    	
    int query1(int idx) {
    	int res = 0;
    	for (; idx > 0; idx -= idx & -idx) res += b[idx];
    	return res;
    }
    
    int query(int l, int r) {
        return query1(r) - query1(l - 1);
    }
};

typedef long long ll;
const int MAX = 2e5 + 2;
const int s = 447;
int a[MAX], p[MAX], cnt[MAX], cnt1[MAX], n;
ll res;
map<int, int> mp;

void solve() {
    cin >> n;
    for (int i = 1; i <= n; i++) {
        cin >> a[i];
        mp[a[i]]++;
    }
    int m = 0;
    for (auto i : mp) {
        mp[i.first] = ++m;
    }
    for (int i = 1; i <= n; i++) {
        a[i] = mp[a[i]];
        cnt1[a[i]]++;
    }
    for (int i = 1; i <= n; i++) {
        int mx = 0;
        for (int j = i; j <= min(n, i + 2 * s - 1); j++) {
            if (cnt1[a[j]] <= s) {
                cnt[a[j]]++;
                mx = max(mx, cnt[a[j]]);
                if (mx > (j - i + 1 - mx)) res++;
            }
        }
        for (int j = i; j <= min(n, i + 2 * s - 1); j++) {
            if (cnt1[a[j]] <= s) cnt[a[j]]--;
        }
    }
    for (int i = 1; i <= m; i++) {
        if (cnt1[i] <= s) continue;
        p[0] = 0;
        for (int j = 1; j <= n; j++) p[j] = p[j - 1] + (a[j] == i ? 1 : -1);
        for (int j = 0; j <= n; j++) p[j] += n;
        fenwick st;
        st.start(2 * n);
        for (int j = 1; j <= 2 * n; j++) st.insertVal(0);
        st.update(p[0], 1);
        for (int j = 1; j <= n; j++) {
            res += st.query(1, p[j] - 1);
            st.update(p[j], 1);
        }
    }
    cout << res;
}

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    solve();
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 1 ms 456 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 1 ms 456 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 600 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 4 ms 348 KB Output is correct
10 Correct 4 ms 504 KB Output is correct
11 Correct 4 ms 348 KB Output is correct
12 Correct 4 ms 348 KB Output is correct
13 Correct 4 ms 348 KB Output is correct
14 Correct 4 ms 348 KB Output is correct
15 Correct 4 ms 604 KB Output is correct
16 Correct 4 ms 348 KB Output is correct
17 Correct 2 ms 348 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 153 ms 2768 KB Output is correct
2 Correct 164 ms 3412 KB Output is correct
3 Correct 95 ms 2132 KB Output is correct
4 Correct 173 ms 3660 KB Output is correct
5 Correct 179 ms 3660 KB Output is correct
6 Correct 223 ms 3916 KB Output is correct
7 Correct 202 ms 3916 KB Output is correct
8 Correct 192 ms 3916 KB Output is correct
9 Correct 192 ms 3916 KB Output is correct
10 Correct 212 ms 3936 KB Output is correct
11 Correct 186 ms 3932 KB Output is correct

Subtask #4
70.0 / 70.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 1 ms 456 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 600 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 4 ms 348 KB Output is correct
10 Correct 4 ms 504 KB Output is correct
11 Correct 4 ms 348 KB Output is correct
12 Correct 4 ms 348 KB Output is correct
13 Correct 4 ms 348 KB Output is correct
14 Correct 4 ms 348 KB Output is correct
15 Correct 4 ms 604 KB Output is correct
16 Correct 4 ms 348 KB Output is correct
17 Correct 2 ms 348 KB Output is correct
18 Correct 153 ms 2768 KB Output is correct
19 Correct 164 ms 3412 KB Output is correct
20 Correct 95 ms 2132 KB Output is correct
21 Correct 173 ms 3660 KB Output is correct
22 Correct 179 ms 3660 KB Output is correct
23 Correct 223 ms 3916 KB Output is correct
24 Correct 202 ms 3916 KB Output is correct
25 Correct 192 ms 3916 KB Output is correct
26 Correct 192 ms 3916 KB Output is correct
27 Correct 212 ms 3936 KB Output is correct
28 Correct 186 ms 3932 KB Output is correct
29 Correct 193 ms 5456 KB Output is correct
30 Correct 145 ms 2648 KB Output is correct
31 Correct 270 ms 4688 KB Output is correct
32 Correct 722 ms 9068 KB Output is correct
33 Correct 302 ms 4948 KB Output is correct
34 Correct 308 ms 4944 KB Output is correct
35 Correct 196 ms 3924 KB Output is correct
36 Correct 100 ms 2468 KB Output is correct
37 Correct 127 ms 2648 KB Output is correct
38 Correct 203 ms 3924 KB Output is correct
39 Correct 235 ms 3796 KB Output is correct
40 Correct 206 ms 3916 KB Output is correct
41 Correct 204 ms 3920 KB Output is correct
42 Correct 205 ms 4172 KB Output is correct
43 Correct 243 ms 5460 KB Output is correct
44 Correct 269 ms 5496 KB Output is correct
45 Correct 237 ms 5492 KB Output is correct
46 Correct 237 ms 5432 KB Output is correct
47 Correct 245 ms 5500 KB Output is correct
48 Correct 978 ms 4152 KB Output is correct
49 Correct 976 ms 4264 KB Output is correct
50 Correct 497 ms 4152 KB Output is correct
51 Correct 501 ms 4096 KB Output is correct
52 Correct 1779 ms 4284 KB Output is correct
53 Correct 1590 ms 4276 KB Output is correct
54 Correct 947 ms 4176 KB Output is correct