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Submission #477485

# Submission time Handle Problem Language Result Execution time Memory
477485 2021-10-02T09:27:24 Z PiejanVDC Split the sequence (APIO14_sequence) C++17
0 / 100
 2000 ms 16024 KB 
#include <bits/stdc++.h>
using namespace std;

signed main() {
    int n,k; cin>>n>>k;
    vector<int>pref(n+1);
    pref[0]=0;
    for(int i = 0 ; i < n ; i++) {
        int x; cin>>x;
        pref[i+1] = pref[i] + x;
    }
    int res[n+1][k+1];
    int dp[n+1][k+1];
    for(int i = 0 ; i <= n ; i++)
        dp[i][0] = 0;
    for(int i = 1 ; i <= k ; i++)
        dp[0][i] = 0;
    for(int i = 1 ; i <= k ; i++) {
        for(int j = 1 ; j <= n ; j++) {
            dp[j][i] = 0;
            for(int c = 1 ; c < j ; c++) {
                if(dp[c][i-1] + (pref[n] - pref[j-1]) * (pref[j-1] - pref[c-1]) > dp[j][i]) {
                    res[j][i] = c;
                }
                dp[j][i] = max(dp[j][i],dp[c][i-1] + (pref[n] - pref[j-1]) * (pref[j-1] - pref[c-1]));
            }
        }
    }
    int mx=0;
    int node;
    for(int i = 0 ; i <= n ; i++) {
        if(dp[i][k] > mx) {
            mx=dp[i][k];
            node = i;
        }
    }
    cout << mx << "\n";
    for(int i = 0 ; i < k ; i++) {
        cout << node-1 << " ";
        node = res[node][k - i];
    }
}

Compilation message

sequence.cpp: In function 'int main()':
sequence.cpp:40:14: warning: 'node' may be used uninitialized in this function [-Wmaybe-uninitialized]
   40 |         node = res[node][k - i];
      |         ~~~~~^~~~~~~~~~~~~~~~~~

Subtask #1
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB contestant found the optimal answer: 108 == 108
2 Correct 0 ms 204 KB contestant found the optimal answer: 999 == 999
3 Runtime error 1 ms 332 KB Execution killed with signal 11
4 Halted 0 ms 0 KB -

Subtask #2
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB contestant found the optimal answer: 1093956 == 1093956
2 Correct 0 ms 204 KB contestant found the optimal answer: 302460000 == 302460000
3 Incorrect 0 ms 204 KB Integer 0 violates the range [1, 49]
4 Halted 0 ms 0 KB -

Subtask #3
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB contestant found the optimal answer: 610590000 == 610590000
2 Correct 1 ms 204 KB contestant found the optimal answer: 311760000 == 311760000
3 Incorrect 8 ms 588 KB Integer 0 violates the range [1, 199]
4 Halted 0 ms 0 KB -

Subtask #4
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 316 KB contestant found the optimal answer: 21503404 == 21503404
2 Correct 3 ms 204 KB contestant found the optimal answer: 140412195 == 140412195
3 Incorrect 170 ms 1740 KB Integer -1 violates the range [1, 999]
4 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 310 ms 616 KB contestant found the optimal answer: 1818678304 == 1818678304
2 Correct 254 ms 612 KB contestant found the optimal answer: 1326260195 == 1326260195
3 Execution timed out 2059 ms 16024 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #6
0 / 29.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2090 ms 3788 KB Time limit exceeded
2 Halted 0 ms 0 KB -