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Submission #1022661

# Submission time Handle Problem Language Result Execution time Memory
1022661 2024-07-13T21:37:35 Z JakobZorz Radio Towers (IOI22_towers) C++17
0 / 100
 4000 ms 1880 KB 
#include"towers.h"
#include<vector>
#include<iostream>
using namespace std;

vector<int>arr;
vector<int>thres;

void init(int N,vector<int>H){
    arr=H;
    
    int n=(int)arr.size();
    int res=0;
    thres.resize(n);
    
    for(int i=0;i<n;i++){
        int mn=2e9;
        
        int mx1=0;
        for(int j=i;j>=0;j--){
            mx1=max(mx1,arr[j]);
            if(arr[j]<arr[i]){
                mn=min(mn,mx1);
                break;
            }
        }
        
        int mx2=0;
        for(int j=i;j<n;j++){
            mx2=max(mx2,arr[j]);
            if(arr[j]<arr[i]){
                mn=min(mn,mx2);
                break;
            }
        }
        
        thres[i]=mn-arr[i];
    }
}

int max_towers(int L,int R,int D){
    int first=-1,last=-1;
    int res=0;
    for(int i=L;i<=R;i++){
        if(thres[i]>=D){
            res++;
            if(first==-1)
                first=i;
            last=i;
        }
    }
    if(first==-1)
        return 1;
    
    int mx=0;
    for(int i=first;i>=L;i--){
        if(max(arr[i],arr[first])+D<=mx){
            res++;
            break;
        }
        mx=max(mx,arr[i]);
    }
    
    mx=0;
    for(int i=last;i<=R;i++){
        if(max(arr[i],arr[last])+D<=mx){
            res++;
            break;
        }
        mx=max(mx,arr[i]);
    }
    
    return res;
}

Compilation message

towers.cpp: In function 'void init(int, std::vector<int>)':
towers.cpp:13:9: warning: unused variable 'res' [-Wunused-variable]
   13 |     int res=0;
      |         ^~~

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Incorrect 2131 ms 1368 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 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 504 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 2 ms 344 KB Output is correct
9 Correct 2 ms 344 KB Output is correct
10 Correct 2 ms 344 KB Output is correct
11 Correct 1 ms 460 KB Output is correct
12 Incorrect 0 ms 344 KB 1st lines differ - on the 1st token, expected: '2', found: '1'
13 Halted 0 ms 0 KB -

Subtask #3
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 504 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 2 ms 344 KB Output is correct
9 Correct 2 ms 344 KB Output is correct
10 Correct 2 ms 344 KB Output is correct
11 Correct 1 ms 460 KB Output is correct
12 Incorrect 0 ms 344 KB 1st lines differ - on the 1st token, expected: '2', found: '1'
13 Halted 0 ms 0 KB -

Subtask #4
0 / 14.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4027 ms 1880 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1674 ms 780 KB Output is correct
2 Execution timed out 4038 ms 1880 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #6
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 504 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 2 ms 344 KB Output is correct
9 Correct 2 ms 344 KB Output is correct
10 Correct 2 ms 344 KB Output is correct
11 Correct 1 ms 460 KB Output is correct
12 Incorrect 0 ms 344 KB 1st lines differ - on the 1st token, expected: '2', found: '1'
13 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 2131 ms 1368 KB 12th lines differ - on the 1st token, expected: '2', found: '1'
2 Halted 0 ms 0 KB -