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Submission #682981

# Submission time Handle Problem Language Result Execution time Memory
682981 2023-01-17T11:58:35 Z irmuun Radio Towers (IOI22_towers) C++17
0 / 100
 4000 ms 1440 KB 
#include<bits/stdc++.h>
#include "towers.h"
using namespace std;
const int N=1e5;
int n,k,spe=-1;
vector<int>a;
void init(int N,vector<int>h){
	n=N;
	a=h;
	bool ok=true;
	for(int i=0;i<N;i++){
		if((i==0||(i>0&&h[i-1]<h[i]))&&(i==n-1||(i<n-1&&h[i]>h[i+1]))){
			spe=i;
			for(int j=0;j<spe;j++){
				if(h[j]>h[j+1]){
					ok=false;
				}
			}
			for(int i=spe+1;i<N;i++){
				if(h[i-1]<h[i]){
					ok=false;
				}
			}
			if(ok==false){
				spe=-1;
			}
			break;
		}
	}
}
int max_towers(int l,int r,int d){
	if(spe>-1){
		if(l==r){
			return 1;
		}
		if(l<k&&k<r&&a[l]+d<=a[spe]&&a[r]+d<=a[spe]){
			return 2;
		}
		else{
			return 1;
		}
	}
	int dp[n+5];
	dp[l]=1;
	for(int i=l+1;i<=r;i++){
		dp[i]=1;
		for(int j=i+2;i<=r;j++){
			for(int k=i+1;k<j;k++){
				if(a[i]+d<=a[k]&&a[j]+d<=a[j]){
					dp[i]=max(dp[j]+1,dp[i]);
				}
			}
		}
	}
	int ans=0;
	for(int i=l;i<=r;i++){
		ans=max(ans,dp[i]);
	}
	return ans;
}

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Incorrect 462 ms 928 KB 12th lines differ - on the 1st token, expected: '2', found: '1'
2 Halted 0 ms 0 KB -

Subtask #2
0 / 11.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4089 ms 208 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #3
0 / 12.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4089 ms 208 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 14.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4069 ms 1440 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 17.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4083 ms 464 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #6
0 / 19.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4089 ms 208 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 462 ms 928 KB 12th lines differ - on the 1st token, expected: '2', found: '1'
2 Halted 0 ms 0 KB -