oj.uz

Submission #577322

# Submission time Handle Problem Language Result Execution time Memory
577322 2022-06-14T14:15:39 Z jamielim Index (COCI21_index) C++14
60 / 110
 2500 ms 57180 KB 
#include <bits/stdc++.h>
using namespace std;

#define fi first
#define se second
#define mp make_pair
#define pb emplace_back
#define ALL(x) x.begin(),x.end()
#define SZ(x) (int)x.size()
typedef long long ll;
typedef pair<int,int> ii;
typedef pair<ii,ii> i4;
const int MOD=1000000007;
const int INF=1012345678;
const ll LLINF=1012345678012345678LL;
const double PI=3.1415926536;
const double EPS=1e-14;

int n,q;
int arr[200005];

struct node{
	int s,e,m;
	vector<int> v;
	node *l,*r;
	node(int S,int E){
		s=S;e=E;m=(s+e)/2;
		if(s==e){
			v.pb(arr[s]);
		}else{
			l=new node(s,m);
			r=new node(m+1,e);
			int p1=0,p2=0;
			for(int i=s;i<=e;i++){
				if(p1==SZ(l->v)){
					v.pb((r->v)[p2++]);
				}else if(p2==SZ(r->v)){
					v.pb((l->v)[p1++]);
				}else{
					if((l->v)[p1]<(r->v)[p2]){
						v.pb((l->v)[p1++]);
					}else{
						v.pb((r->v)[p2++]);
					}
				}
			}
		}
	}
	int qry(int x,int y,int val){
		if(s>=x&&e<=y){
			int b=lower_bound(ALL(v),val)-v.begin();
			return SZ(v)-b;
		}
		if(y<=m)return l->qry(x,y,val);
		if(x>m)return r->qry(x,y,val);
		return l->qry(x,m,val)+r->qry(m+1,y,val);
	}
}*root;

int main(){
	scanf("%d%d",&n,&q);
	for(int i=0;i<n;i++)scanf("%d",&arr[i]);
	root=new node(0,n-1);
	int l,r;
	while(q--){
		scanf("%d%d",&l,&r);l--;r--;
		int mini=0,maxi=r-l+1;
		while(mini<maxi){
			int mid=(mini+maxi+1)/2;
			if(root->qry(l,r,mid)>=mid){ // number of papers from l to r with >=mid citations
				mini=mid;
			}else{
				maxi=mid-1;
			}
		}
		printf("%d\n",mini);
	}
}

Compilation message

index.cpp: In function 'int main()':
index.cpp:61:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   61 |  scanf("%d%d",&n,&q);
      |  ~~~~~^~~~~~~~~~~~~~
index.cpp:62:27: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   62 |  for(int i=0;i<n;i++)scanf("%d",&arr[i]);
      |                      ~~~~~^~~~~~~~~~~~~~
index.cpp:66:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   66 |   scanf("%d%d",&l,&r);l--;r--;
      |   ~~~~~^~~~~~~~~~~~~~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 468 KB Output is correct
2 Correct 4 ms 468 KB Output is correct
3 Correct 4 ms 468 KB Output is correct
4 Correct 3 ms 440 KB Output is correct
5 Correct 4 ms 468 KB Output is correct
6 Correct 4 ms 468 KB Output is correct
7 Correct 5 ms 468 KB Output is correct
8 Correct 4 ms 468 KB Output is correct
9 Correct 4 ms 468 KB Output is correct
10 Correct 4 ms 468 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 468 KB Output is correct
2 Correct 4 ms 468 KB Output is correct
3 Correct 4 ms 468 KB Output is correct
4 Correct 3 ms 440 KB Output is correct
5 Correct 4 ms 468 KB Output is correct
6 Correct 4 ms 468 KB Output is correct
7 Correct 5 ms 468 KB Output is correct
8 Correct 4 ms 468 KB Output is correct
9 Correct 4 ms 468 KB Output is correct
10 Correct 4 ms 468 KB Output is correct
11 Correct 646 ms 14320 KB Output is correct
12 Correct 611 ms 14164 KB Output is correct
13 Correct 647 ms 14312 KB Output is correct
14 Correct 642 ms 14176 KB Output is correct
15 Correct 641 ms 14268 KB Output is correct
16 Correct 643 ms 14364 KB Output is correct
17 Correct 636 ms 14256 KB Output is correct
18 Correct 645 ms 14340 KB Output is correct
19 Correct 658 ms 14420 KB Output is correct
20 Correct 624 ms 14292 KB Output is correct

Subtask #3
0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 468 KB Output is correct
2 Correct 4 ms 468 KB Output is correct
3 Correct 4 ms 468 KB Output is correct
4 Correct 3 ms 440 KB Output is correct
5 Correct 4 ms 468 KB Output is correct
6 Correct 4 ms 468 KB Output is correct
7 Correct 5 ms 468 KB Output is correct
8 Correct 4 ms 468 KB Output is correct
9 Correct 4 ms 468 KB Output is correct
10 Correct 4 ms 468 KB Output is correct
11 Correct 646 ms 14320 KB Output is correct
12 Correct 611 ms 14164 KB Output is correct
13 Correct 647 ms 14312 KB Output is correct
14 Correct 642 ms 14176 KB Output is correct
15 Correct 641 ms 14268 KB Output is correct
16 Correct 643 ms 14364 KB Output is correct
17 Correct 636 ms 14256 KB Output is correct
18 Correct 645 ms 14340 KB Output is correct
19 Correct 658 ms 14420 KB Output is correct
20 Correct 624 ms 14292 KB Output is correct
21 Execution timed out 2569 ms 57180 KB Time limit exceeded
22 Halted 0 ms 0 KB -