oj.uz

Submission #699028

# Submission time Handle Problem Language Result Execution time Memory
699028 2023-02-15T11:08:40 Z gghx Alternating Heights (CCO22_day1problem1) C++14
25 / 25
 582 ms 13980 KB 
#include <bits/stdc++.h>
using namespace std;
#define ll long long
 
int main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	ll n,k,qn;
	cin>>n>>k>>qn;
	ll arr[n];
	for(int i=0;i<n;i++){
		cin>>arr[i];
		arr[i]--;	
	}
	ll rightmost[n]; //the rightmost workable n
	for(int i=0;i<n;i++) rightmost[i]=i;
	ll right=0;
	for(int i=0;i<n;i++){
		//check range (i,right+1)
		while(true){
			rightmost[i]=right;
			if(right>n-1) break;
			right++;
			vector<ll> adj[k],adj1[k];
			bool bigger=true;
			bool die=false;
			for(int j=i;j<right-1;j++){
				if(arr[j]==arr[j+1]){
					die=true;
				}
				if(bigger) adj[arr[j]].push_back(arr[j+1]);
				else adj[arr[j+1]].push_back(arr[j]);
				if(bigger) adj1[arr[j+1]].push_back(arr[j]);
				else adj1[arr[j]].push_back(arr[j+1]);
				bigger=1-bigger;
			}
			if(die==true){
				right--;
				break;
			}
			ll indeg[k];
			for(int j=0;j<k;j++) indeg[j]=adj[j].size();
			queue<ll> q;
			ll count=0;
			for(int j=0;j<k;j++){
				if(indeg[j]==0){
					q.push(j);
					count++;
				}
			}
			while(!q.empty()){
				ll tp=q.front(); q.pop();
				for(int j=0;j<adj1[tp].size();j++){
					ll neighbour=adj1[tp][j];
					if(indeg[neighbour]==0) continue;
					if(indeg[neighbour]==1){
						indeg[neighbour]=0;
						q.push(neighbour);
						count++;
					}
					else indeg[neighbour]--;
				}
			}
			if(count<k){
				right--;
				break;
			}
		}	
		rightmost[i]--;
	}
	for(int i=0;i<qn;i++){
		ll x,y; cin>>x>>y;
		x--; y--;
		if(y<=rightmost[x]) cout<<"YES\n";
		else cout<<"NO\n";
	}
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:53:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   53 |     for(int j=0;j<adj1[tp].size();j++){
      |                 ~^~~~~~~~~~~~~~~~

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 158 ms 12692 KB Output is correct
2 Correct 152 ms 12632 KB Output is correct
3 Correct 154 ms 12848 KB Output is correct
4 Correct 112 ms 7160 KB Output is correct
5 Correct 127 ms 9164 KB Output is correct
6 Correct 154 ms 12672 KB Output is correct
7 Correct 154 ms 12704 KB Output is correct
8 Correct 159 ms 12912 KB Output is correct
9 Correct 159 ms 12732 KB Output is correct
10 Correct 207 ms 13248 KB Output is correct
11 Correct 216 ms 13772 KB Output is correct
12 Correct 260 ms 13016 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 146 ms 10948 KB Output is correct
2 Correct 152 ms 10956 KB Output is correct
3 Correct 140 ms 10832 KB Output is correct
4 Correct 118 ms 8128 KB Output is correct
5 Correct 132 ms 9280 KB Output is correct
6 Correct 142 ms 11032 KB Output is correct
7 Correct 139 ms 10912 KB Output is correct
8 Correct 142 ms 11072 KB Output is correct
9 Correct 148 ms 11336 KB Output is correct
10 Correct 140 ms 11924 KB Output is correct
11 Correct 139 ms 11876 KB Output is correct
12 Correct 0 ms 320 KB Output is correct

Subtask #3
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 351 ms 596 KB Output is correct
3 Correct 387 ms 612 KB Output is correct
4 Correct 2 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 324 KB Output is correct
7 Correct 257 ms 516 KB Output is correct
8 Correct 403 ms 736 KB Output is correct
9 Correct 561 ms 588 KB Output is correct
10 Correct 380 ms 548 KB Output is correct
11 Correct 415 ms 972 KB Output is correct
12 Correct 318 ms 636 KB Output is correct

Subtask #4
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 158 ms 12692 KB Output is correct
2 Correct 152 ms 12632 KB Output is correct
3 Correct 154 ms 12848 KB Output is correct
4 Correct 112 ms 7160 KB Output is correct
5 Correct 127 ms 9164 KB Output is correct
6 Correct 154 ms 12672 KB Output is correct
7 Correct 154 ms 12704 KB Output is correct
8 Correct 159 ms 12912 KB Output is correct
9 Correct 159 ms 12732 KB Output is correct
10 Correct 207 ms 13248 KB Output is correct
11 Correct 216 ms 13772 KB Output is correct
12 Correct 260 ms 13016 KB Output is correct
13 Correct 146 ms 10948 KB Output is correct
14 Correct 152 ms 10956 KB Output is correct
15 Correct 140 ms 10832 KB Output is correct
16 Correct 118 ms 8128 KB Output is correct
17 Correct 132 ms 9280 KB Output is correct
18 Correct 142 ms 11032 KB Output is correct
19 Correct 139 ms 10912 KB Output is correct
20 Correct 142 ms 11072 KB Output is correct
21 Correct 148 ms 11336 KB Output is correct
22 Correct 140 ms 11924 KB Output is correct
23 Correct 139 ms 11876 KB Output is correct
24 Correct 0 ms 320 KB Output is correct
25 Correct 0 ms 212 KB Output is correct
26 Correct 351 ms 596 KB Output is correct
27 Correct 387 ms 612 KB Output is correct
28 Correct 2 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 324 KB Output is correct
31 Correct 257 ms 516 KB Output is correct
32 Correct 403 ms 736 KB Output is correct
33 Correct 561 ms 588 KB Output is correct
34 Correct 380 ms 548 KB Output is correct
35 Correct 415 ms 972 KB Output is correct
36 Correct 318 ms 636 KB Output is correct
37 Correct 582 ms 13540 KB Output is correct
38 Correct 521 ms 13468 KB Output is correct
39 Correct 150 ms 12624 KB Output is correct
40 Correct 118 ms 8140 KB Output is correct
41 Correct 131 ms 9632 KB Output is correct
42 Correct 450 ms 13428 KB Output is correct
43 Correct 561 ms 13936 KB Output is correct
44 Correct 433 ms 13388 KB Output is correct
45 Correct 540 ms 13876 KB Output is correct
46 Correct 537 ms 13900 KB Output is correct
47 Correct 546 ms 13980 KB Output is correct