oj.uz

Submission #1011244

# Submission time Handle Problem Language Result Execution time Memory
1011244 2024-06-30T07:42:18 Z 0pt1mus23 Izbori (COCI22_izbori) C++14
110 / 110
 1832 ms 55888 KB 
/*
    not my sol, edu
*/
#pragma GCC optimize("O3", "inline")
#include <bits/stdc++.h>
using namespace std;
#define ins insert
#define pb push_back
#define int long long int
#define pii pair<int, int>
#define endl '\n'
#define drop(x) cout<<(x)<<endl; return;
#define all(x) x.begin(),x.end()

const int mod = 1e9 +7, sze = 2e5+10, inf = LLONG_MAX, prime = 1453;
int arr[sze];
int brr[sze];

int dac(int l,int r){
    if(l==r){
        return 1;
    }
    if(l>r){
        return 0;
    }
    int ans=0;
    int mid = (l+r)/2;
    set<int> cand;
    map<int,int> cnt;

    for(int i = mid-1;i>=l;i--){
        ++cnt[arr[i]];
        if(cnt[arr[i]]> (mid-i)/2){
            cand.ins(arr[i]);
        }
    }
    cnt.clear();
    for(int i = mid;i<=r;i++){
        ++cnt[arr[i]];
        if(cnt[arr[i]]>(i-mid+1)/2){
            cand.ins(arr[i]);
        }
    }
    for(auto v:cand){
        for(int i=l;i<=r;i++){
            if(arr[i]==v){
                brr[i]=+1;
            }
            else{
                brr[i]=-1;
            }
        }
        cnt.clear();
        int sum=0;
        ++cnt[0];
        for(int i=l;i<mid;i++){
            sum+=brr[i];
            ++cnt[sum];
        }
        int upto = (r-l+1);
        for(int i = -upto;i<=upto;i++){
            cnt[i]+=cnt[i-1];
        }
        for(int i = mid;i<=r;i++){
            sum+=brr[i];
            ans+=cnt[sum-1];
        }


    }
    // cout<<l<<" "<<r<<" "<<ans<<endl;
    return ans + dac(l,mid-1) + dac(mid+1,r);
}

void mal(){
    int n;
    cin>>n;
    for(int i=1;i<=n;i++){
        cin>>arr[i];
    }
    cout<<dac(1,n)<<endl;
} 
 
signed main() {
    cin.tie(0)->sync_with_stdio(0);
    clock_t z = clock();
    int tt = 1;
    // cin>>tt;
    
    while(tt--){
        mal();        
    }
    
    // cerr<<(double)(clock() - z) / CLOCKS_PER_SEC <<endl;
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:86:13: warning: unused variable 'z' [-Wunused-variable]
   86 |     clock_t z = clock();
      |             ^

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 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 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 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 3 ms 604 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 7 ms 984 KB Output is correct
10 Correct 7 ms 860 KB Output is correct
11 Correct 10 ms 776 KB Output is correct
12 Correct 9 ms 860 KB Output is correct
13 Correct 7 ms 992 KB Output is correct
14 Correct 7 ms 860 KB Output is correct
15 Correct 7 ms 860 KB Output is correct
16 Correct 7 ms 992 KB Output is correct
17 Correct 4 ms 856 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 911 ms 36012 KB Output is correct
2 Correct 1209 ms 47052 KB Output is correct
3 Correct 681 ms 27492 KB Output is correct
4 Correct 1332 ms 49232 KB Output is correct
5 Correct 1368 ms 51016 KB Output is correct
6 Correct 1471 ms 54064 KB Output is correct
7 Correct 1475 ms 54096 KB Output is correct
8 Correct 1561 ms 54064 KB Output is correct
9 Correct 1562 ms 54064 KB Output is correct
10 Correct 1528 ms 54068 KB Output is correct
11 Correct 958 ms 53840 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 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 3 ms 604 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 7 ms 984 KB Output is correct
10 Correct 7 ms 860 KB Output is correct
11 Correct 10 ms 776 KB Output is correct
12 Correct 9 ms 860 KB Output is correct
13 Correct 7 ms 992 KB Output is correct
14 Correct 7 ms 860 KB Output is correct
15 Correct 7 ms 860 KB Output is correct
16 Correct 7 ms 992 KB Output is correct
17 Correct 4 ms 856 KB Output is correct
18 Correct 911 ms 36012 KB Output is correct
19 Correct 1209 ms 47052 KB Output is correct
20 Correct 681 ms 27492 KB Output is correct
21 Correct 1332 ms 49232 KB Output is correct
22 Correct 1368 ms 51016 KB Output is correct
23 Correct 1471 ms 54064 KB Output is correct
24 Correct 1475 ms 54096 KB Output is correct
25 Correct 1561 ms 54064 KB Output is correct
26 Correct 1562 ms 54064 KB Output is correct
27 Correct 1528 ms 54068 KB Output is correct
28 Correct 958 ms 53840 KB Output is correct
29 Correct 951 ms 55524 KB Output is correct
30 Correct 257 ms 10576 KB Output is correct
31 Correct 630 ms 21140 KB Output is correct
32 Correct 1832 ms 51828 KB Output is correct
33 Correct 588 ms 22604 KB Output is correct
34 Correct 683 ms 23496 KB Output is correct
35 Correct 416 ms 15440 KB Output is correct
36 Correct 229 ms 9296 KB Output is correct
37 Correct 306 ms 11280 KB Output is correct
38 Correct 1683 ms 54052 KB Output is correct
39 Correct 1562 ms 54016 KB Output is correct
40 Correct 1767 ms 53824 KB Output is correct
41 Correct 1643 ms 54100 KB Output is correct
42 Correct 1639 ms 53972 KB Output is correct
43 Correct 1609 ms 55644 KB Output is correct
44 Correct 1470 ms 55888 KB Output is correct
45 Correct 1539 ms 55648 KB Output is correct
46 Correct 1532 ms 55636 KB Output is correct
47 Correct 1469 ms 55648 KB Output is correct
48 Correct 1721 ms 54116 KB Output is correct
49 Correct 1675 ms 54492 KB Output is correct
50 Correct 1706 ms 54100 KB Output is correct
51 Correct 1672 ms 54132 KB Output is correct
52 Correct 1620 ms 54408 KB Output is correct
53 Correct 1635 ms 54356 KB Output is correct
54 Correct 1537 ms 54364 KB Output is correct