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Submission #838150

# Submission time Handle Problem Language Result Execution time Memory
838150 2023-08-26T09:41:31 Z Dremix10 Radio Towers (IOI22_towers) C++17
11 / 100
 1405 ms 2097152 KB 
#include "towers.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int,int> pi;
typedef pair<ll,ll> pl;
#define F first
#define S second
#define all(x) (x).begin(),(x).end()
const int N = 3e5+5;
const int MOD = 1e9+7;
const ll INF = 1e18+5;
#ifdef dremix
    #define p(x) cerr<<#x<<" = "<<x<<endl;
    #define pv(x) cerr<<#x<<" = {";for(auto v : x)cerr<<v<<", ";cerr<<"}"<<endl;
#else
    #define p(x) {}
    #define pv(x) {}
#endif

vector<int> arr;
int n,k;

void init(int N, vector<int> H) {
    n = N;
    arr = H;

    int i;
    
}

int max_towers(int L, int R, int D) {
    
    vector<vector<int> > dp(n,vector<int>(n,-MOD));
    int i,j;
    for(i=0;i<n;i++){
        dp[i][i] = 1;
    }

    // dp[i][j], max group size from {0,i} with the last chosen being j (j <= i) 
    
    for(i=L+1;i<=R;i++){
        int maxi = -MOD;
        for(j=i-1;j>=L;j--){
            /// transition of not chosing i
            dp[i][j] = max(dp[i][j],dp[i-1][j]);

            /// transition of choosing i:
            /// must find k bt {j+1,i-1} that has conditions

            if(maxi - D >= max(arr[i],arr[j]))
                dp[i][i] = max(dp[i][i],dp[i-1][j] + 1); 
            
            maxi = max(maxi,arr[j]);
        }
        pv(dp[i])
    }

    int ret = 1;

    for(i=0;i<n;i++)ret = max(ret,dp[R][i]);
    return ret;
}

Compilation message

towers.cpp: In function 'void init(int, std::vector<int>)':
towers.cpp:28:9: warning: unused variable 'i' [-Wunused-variable]
   28 |     int i;
      |         ^

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Runtime error 1405 ms 2097152 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 976 KB Output is correct
2 Correct 10 ms 16080 KB Output is correct
3 Correct 8 ms 15952 KB Output is correct
4 Correct 7 ms 15952 KB Output is correct
5 Correct 7 ms 15956 KB Output is correct
6 Correct 7 ms 16020 KB Output is correct
7 Correct 7 ms 15952 KB Output is correct
8 Correct 7 ms 15952 KB Output is correct
9 Correct 7 ms 15964 KB Output is correct
10 Correct 7 ms 15952 KB Output is correct
11 Correct 7 ms 15952 KB Output is correct
12 Correct 0 ms 208 KB Output is correct
13 Correct 7 ms 15932 KB Output is correct
14 Correct 7 ms 15972 KB Output is correct
15 Correct 6 ms 15952 KB Output is correct
16 Correct 8 ms 15952 KB Output is correct
17 Correct 7 ms 15952 KB Output is correct
18 Correct 7 ms 15952 KB Output is correct
19 Correct 7 ms 15952 KB Output is correct
20 Correct 11 ms 15952 KB Output is correct
21 Correct 11 ms 16040 KB Output is correct
22 Correct 11 ms 15980 KB Output is correct
23 Correct 10 ms 15952 KB Output is correct
24 Correct 10 ms 16048 KB Output is correct
25 Correct 2 ms 3408 KB Output is correct
26 Correct 10 ms 15952 KB Output is correct
27 Correct 12 ms 15952 KB Output is correct
28 Correct 11 ms 16024 KB Output is correct
29 Correct 10 ms 15952 KB Output is correct
30 Correct 10 ms 15952 KB Output is correct
31 Correct 10 ms 15960 KB Output is correct
32 Correct 9 ms 15952 KB Output is correct
33 Correct 9 ms 15952 KB Output is correct
34 Correct 17 ms 16056 KB Output is correct
35 Correct 12 ms 15952 KB Output is correct

Subtask #3
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 976 KB Output is correct
2 Correct 10 ms 16080 KB Output is correct
3 Correct 8 ms 15952 KB Output is correct
4 Correct 7 ms 15952 KB Output is correct
5 Correct 7 ms 15956 KB Output is correct
6 Correct 7 ms 16020 KB Output is correct
7 Correct 7 ms 15952 KB Output is correct
8 Correct 7 ms 15952 KB Output is correct
9 Correct 7 ms 15964 KB Output is correct
10 Correct 7 ms 15952 KB Output is correct
11 Correct 7 ms 15952 KB Output is correct
12 Correct 0 ms 208 KB Output is correct
13 Correct 7 ms 15932 KB Output is correct
14 Correct 7 ms 15972 KB Output is correct
15 Correct 6 ms 15952 KB Output is correct
16 Correct 8 ms 15952 KB Output is correct
17 Correct 7 ms 15952 KB Output is correct
18 Correct 7 ms 15952 KB Output is correct
19 Correct 7 ms 15952 KB Output is correct
20 Correct 11 ms 15952 KB Output is correct
21 Correct 11 ms 16040 KB Output is correct
22 Correct 11 ms 15980 KB Output is correct
23 Correct 10 ms 15952 KB Output is correct
24 Correct 10 ms 16048 KB Output is correct
25 Correct 2 ms 3408 KB Output is correct
26 Correct 10 ms 15952 KB Output is correct
27 Correct 12 ms 15952 KB Output is correct
28 Correct 11 ms 16024 KB Output is correct
29 Correct 10 ms 15952 KB Output is correct
30 Correct 10 ms 15952 KB Output is correct
31 Correct 10 ms 15960 KB Output is correct
32 Correct 9 ms 15952 KB Output is correct
33 Correct 9 ms 15952 KB Output is correct
34 Correct 17 ms 16056 KB Output is correct
35 Correct 12 ms 15952 KB Output is correct
36 Runtime error 704 ms 2097152 KB Execution killed with signal 9
37 Halted 0 ms 0 KB -

Subtask #4
0 / 14.0

# Verdict Execution time Memory Grader output
1 Runtime error 701 ms 2097152 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #5
0 / 17.0

# Verdict Execution time Memory Grader output
1 Runtime error 691 ms 2097152 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #6
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 976 KB Output is correct
2 Correct 10 ms 16080 KB Output is correct
3 Correct 8 ms 15952 KB Output is correct
4 Correct 7 ms 15952 KB Output is correct
5 Correct 7 ms 15956 KB Output is correct
6 Correct 7 ms 16020 KB Output is correct
7 Correct 7 ms 15952 KB Output is correct
8 Correct 7 ms 15952 KB Output is correct
9 Correct 7 ms 15964 KB Output is correct
10 Correct 7 ms 15952 KB Output is correct
11 Correct 7 ms 15952 KB Output is correct
12 Correct 0 ms 208 KB Output is correct
13 Correct 7 ms 15932 KB Output is correct
14 Correct 7 ms 15972 KB Output is correct
15 Correct 6 ms 15952 KB Output is correct
16 Correct 8 ms 15952 KB Output is correct
17 Correct 7 ms 15952 KB Output is correct
18 Correct 7 ms 15952 KB Output is correct
19 Correct 7 ms 15952 KB Output is correct
20 Correct 11 ms 15952 KB Output is correct
21 Correct 11 ms 16040 KB Output is correct
22 Correct 11 ms 15980 KB Output is correct
23 Correct 10 ms 15952 KB Output is correct
24 Correct 10 ms 16048 KB Output is correct
25 Correct 2 ms 3408 KB Output is correct
26 Correct 10 ms 15952 KB Output is correct
27 Correct 12 ms 15952 KB Output is correct
28 Correct 11 ms 16024 KB Output is correct
29 Correct 10 ms 15952 KB Output is correct
30 Correct 10 ms 15952 KB Output is correct
31 Correct 10 ms 15960 KB Output is correct
32 Correct 9 ms 15952 KB Output is correct
33 Correct 9 ms 15952 KB Output is correct
34 Correct 17 ms 16056 KB Output is correct
35 Correct 12 ms 15952 KB Output is correct
36 Runtime error 704 ms 2097152 KB Execution killed with signal 9
37 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Runtime error 1405 ms 2097152 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -