oj.uz

Submission #1071796

# Submission time Handle Problem Language Result Execution time Memory
1071796 2024-08-23T11:24:17 Z ezzzay Index (COCI21_index) C++14
110 / 110
 226 ms 14676 KB 
#include<iostream>
#include<math.h>
#include<utility>
#include<map>
#include<string>
#include<algorithm>
#include<math.h>
#include<vector>
using namespace std;
#define int long long 
#define ff first
#define ss second
#define pb push_back
const int S = 320;
const int N = 2e5+5;
int arr[N];
map<int,int>cmp;
int cnt=0;
int ans[N];
int val[N];
bool cmp2(pair<pair<int, int>, int> a, pair<pair<int, int>, int> b)
{
  if (a.ff.ff / S != b.ff.ff / S) return a.ff.ff< b.ff.ff;
  return (a.ff.ss < b.ff.ss)^(a.ff.ff/S%2);
}
int p=0,k=0;
void add(int a){
    if(a>=p)k++;
    
    val[a]++;
    
    if(k-val[p]>=p+1){
        k-=val[p];
        p++;
    }
}
void rem(int a){
    
    if(a>=p)k--;
    val[a]--;
    
    if(k<p){
        
        p--;
        k+=val[p];
    }
    
    
}
signed main(){
    int n,q;
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    cin>>n>>q;
    for(int i=1;i<=n;i++){
        cin>>arr[i];
    }
    int k=1;
    vector<pair<pair<int, int>, int>> qq(q);
    for (int i = 0; i < q; i++) {
        int l, r;
        cin >> l >> r;
        qq[i] = {{l, r}, i};
    }
    sort(qq.begin(), qq.end(), cmp2);
    int L = 0, R = -1;
    for (int i = 0; i < q; i++) {
        int j = qq[i].ss;
        int l = qq[i].ff.ff;
        int r = qq[i].ff.ss;
       // cout<<l<<" "<<r<<endl; 
        while (R < r) add(arr[++R]);
        while (L > l) add(arr[--L]);
        while (R > r) rem(arr[R--]);
        while (L < l) rem(arr[L++]);
        ans[j]=p;
       
    }
    for(int i=0;i<q;i++){
        cout<<ans[i]<<'\n';
    }
}
/*
8 7
1 2 2 5 6 3 2 1
1 8
2 7
1 4
2 5
2 2
7 8
1 7

3
3
2
2
1
-1
3
*/

Compilation message

index.cpp: In function 'int main()':
index.cpp:59:9: warning: unused variable 'k' [-Wunused-variable]
   59 |     int k=1;
      |         ^

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 53 ms 6992 KB Output is correct
12 Correct 52 ms 6788 KB Output is correct
13 Correct 50 ms 6984 KB Output is correct
14 Correct 51 ms 6996 KB Output is correct
15 Correct 50 ms 7000 KB Output is correct
16 Correct 51 ms 6988 KB Output is correct
17 Correct 54 ms 6996 KB Output is correct
18 Correct 51 ms 6996 KB Output is correct
19 Correct 51 ms 6996 KB Output is correct
20 Correct 54 ms 6992 KB Output is correct

Subtask #3
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 53 ms 6992 KB Output is correct
12 Correct 52 ms 6788 KB Output is correct
13 Correct 50 ms 6984 KB Output is correct
14 Correct 51 ms 6996 KB Output is correct
15 Correct 50 ms 7000 KB Output is correct
16 Correct 51 ms 6988 KB Output is correct
17 Correct 54 ms 6996 KB Output is correct
18 Correct 51 ms 6996 KB Output is correct
19 Correct 51 ms 6996 KB Output is correct
20 Correct 54 ms 6992 KB Output is correct
21 Correct 221 ms 14636 KB Output is correct
22 Correct 219 ms 14512 KB Output is correct
23 Correct 219 ms 14656 KB Output is correct
24 Correct 218 ms 14672 KB Output is correct
25 Correct 219 ms 14564 KB Output is correct
26 Correct 226 ms 14672 KB Output is correct
27 Correct 218 ms 14652 KB Output is correct
28 Correct 226 ms 14676 KB Output is correct
29 Correct 220 ms 14516 KB Output is correct
30 Correct 225 ms 14676 KB Output is correct