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Submission #730494

# Submission time Handle Problem Language Result Execution time Memory
730494 2023-04-26T03:39:22 Z huutuan Izbori (COCI22_izbori) C++14
110 / 110
 2588 ms 4300 KB 
#include<bits/stdc++.h>

using namespace std;

// #define int long long
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define sz(x) ((int)x.size())
#define sumof(x) accumulate(all(x), 0ll)

const int S=450, N=2e5+1, M=N*2+10;
int n, a[N], s[N], t[M];
int cnt[N], mp[N];

void update(int pos, int val){
    for (int i=pos; i<M; i+=i&(-i)) t[i]+=val;
}

int get(int pos){
    if (pos<0) return 0;
    int sum=0;
    for (int i=pos; i; i-=i&(-i)) sum+=t[i];
    return sum;
}

void solve(){
    cin >> n;
    long long ans=0;
    for (int i=1; i<=n; ++i) cin >> a[i];
    vector<int> sus(a+1, a+n+1);
    sort(all(sus)); sus.resize(unique(all(sus))-sus.begin());
    for (int i=1; i<=n; ++i) a[i]=lower_bound(all(sus), a[i])-sus.begin()+1;
    for (int i=1; i<=n; ++i) ++mp[a[i]];
    for (int l=1; l<=n; ++l){
        int mx=0;
        for (int r=l; r<=n && r-l+1<=2*S; ++r){
            if (mp[a[r]]<=S){
                ++cnt[a[r]];
                mx=max(mx, cnt[a[r]]);
            }
            if (mx*2>r-l+1) ++ans;
        }
        for (int r=l; r<=n && r-l+1<=2*S; ++r){
            if (mp[a[r]]<=S) --cnt[a[r]];
        }
    }
    for (int i=1; i<=n; ++i){
        if (mp[i]<=S) continue;
        memset(s, 0, sizeof s);
        memset(t, 0, sizeof t);
        for (int j=1; j<=n; ++j) if (a[j]==i) ++s[j]; else --s[j];
        partial_sum(s, s+n+1, s);
        update(0+n+1, 1);
        for (int j=1; j<=n; ++j){
            ans+=get(s[j]-1+n+1);
            update(s[j]+n+1, 1);
        }
    }
    cout << ans;
}

int32_t main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    int ntests=1;
    // cin >> ntests;
    while (ntests--) solve();
    return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 3 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 9 ms 364 KB Output is correct
10 Correct 7 ms 340 KB Output is correct
11 Correct 8 ms 340 KB Output is correct
12 Correct 7 ms 340 KB Output is correct
13 Correct 9 ms 360 KB Output is correct
14 Correct 9 ms 356 KB Output is correct
15 Correct 8 ms 360 KB Output is correct
16 Correct 9 ms 340 KB Output is correct
17 Correct 6 ms 2644 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 250 ms 3676 KB Output is correct
2 Correct 301 ms 3996 KB Output is correct
3 Correct 188 ms 3404 KB Output is correct
4 Correct 417 ms 4056 KB Output is correct
5 Correct 328 ms 4112 KB Output is correct
6 Correct 359 ms 4200 KB Output is correct
7 Correct 357 ms 4196 KB Output is correct
8 Correct 342 ms 4200 KB Output is correct
9 Correct 348 ms 4172 KB Output is correct
10 Correct 345 ms 4192 KB Output is correct
11 Correct 368 ms 4192 KB Output is correct

Subtask #4
70.0 / 70.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 3 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 9 ms 364 KB Output is correct
10 Correct 7 ms 340 KB Output is correct
11 Correct 8 ms 340 KB Output is correct
12 Correct 7 ms 340 KB Output is correct
13 Correct 9 ms 360 KB Output is correct
14 Correct 9 ms 356 KB Output is correct
15 Correct 8 ms 360 KB Output is correct
16 Correct 9 ms 340 KB Output is correct
17 Correct 6 ms 2644 KB Output is correct
18 Correct 250 ms 3676 KB Output is correct
19 Correct 301 ms 3996 KB Output is correct
20 Correct 188 ms 3404 KB Output is correct
21 Correct 417 ms 4056 KB Output is correct
22 Correct 328 ms 4112 KB Output is correct
23 Correct 359 ms 4200 KB Output is correct
24 Correct 357 ms 4196 KB Output is correct
25 Correct 342 ms 4200 KB Output is correct
26 Correct 348 ms 4172 KB Output is correct
27 Correct 345 ms 4192 KB Output is correct
28 Correct 368 ms 4192 KB Output is correct
29 Correct 372 ms 4196 KB Output is correct
30 Correct 230 ms 820 KB Output is correct
31 Correct 492 ms 1320 KB Output is correct
32 Correct 1222 ms 2700 KB Output is correct
33 Correct 525 ms 1492 KB Output is correct
34 Correct 535 ms 1528 KB Output is correct
35 Correct 350 ms 1108 KB Output is correct
36 Correct 212 ms 852 KB Output is correct
37 Correct 245 ms 852 KB Output is correct
38 Correct 374 ms 4196 KB Output is correct
39 Correct 369 ms 4192 KB Output is correct
40 Correct 366 ms 4216 KB Output is correct
41 Correct 376 ms 4196 KB Output is correct
42 Correct 356 ms 4208 KB Output is correct
43 Correct 409 ms 4192 KB Output is correct
44 Correct 399 ms 4196 KB Output is correct
45 Correct 396 ms 4196 KB Output is correct
46 Correct 393 ms 4192 KB Output is correct
47 Correct 407 ms 4236 KB Output is correct
48 Correct 1488 ms 4300 KB Output is correct
49 Correct 1494 ms 4192 KB Output is correct
50 Correct 795 ms 4204 KB Output is correct
51 Correct 784 ms 4196 KB Output is correct
52 Correct 2588 ms 4172 KB Output is correct
53 Correct 2407 ms 4192 KB Output is correct
54 Correct 1447 ms 4200 KB Output is correct