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Submission #1103149

# Submission time Handle Problem Language Result Execution time Memory
1103149 2024-10-20T09:39:38 Z joyboy23ti Feast (NOI19_feast) C++14
41 / 100
 488 ms 262144 KB 
#include <bits/stdc++.h>

#define int long long
#define N 300005
#define pb push_back
#define mod 1000000007
#define fi first
#define se second
#define all(x) x.begin(), x.end()
#define sz(x) (int)x.size()
#define pii pair<int,int>
#define INF 1e18
#define FOR(i, a, b) for(int i = a; i <= b; ++i)
#define FORD(i, a, b) for(int i = a; i >= b; --i)

using namespace std;

int n, k, a[N], pre[N], dp[5500][5500];

void proc()
{
   cin >> n >> k;
   FOR(i, 1, n) cin >> a[i];
   FOR(i, 1, n) pre[i] = pre[i - 1] + a[i];
   FOR(i, 1, k)
   {
       int mx = -INF;
       FOR(j, 1, n)
       {
           mx = max(mx, dp[j - 1][i - 1] - pre[j - 1]);
           dp[j][i] = max(dp[j - 1][i], mx + pre[j]);
       }
   }
   cout << dp[n][k];
}

int32_t main() {

    if(fopen("test.inp", "r"))
    {
        freopen("test.inp", "r", stdin);
        freopen("test.out", "w", stdout);
    }

    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    int T; T = 1;
    //cin >> T;
    while (T--) proc();
}

Compilation message

feast.cpp: In function 'int32_t main()':
feast.cpp:41:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   41 |         freopen("test.inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
feast.cpp:42:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   42 |         freopen("test.out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Runtime error 410 ms 262144 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #2
0 / 8.0

# Verdict Execution time Memory Grader output
1 Runtime error 377 ms 262144 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #3
0 / 18.0

# Verdict Execution time Memory Grader output
1 Runtime error 488 ms 262144 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6480 KB Output is correct
2 Correct 2 ms 6480 KB Output is correct
3 Correct 1 ms 6480 KB Output is correct
4 Correct 1 ms 6480 KB Output is correct
5 Correct 2 ms 6616 KB Output is correct
6 Correct 1 ms 6480 KB Output is correct
7 Correct 1 ms 6480 KB Output is correct
8 Correct 2 ms 6480 KB Output is correct
9 Correct 1 ms 6480 KB Output is correct
10 Correct 2 ms 6480 KB Output is correct

Subtask #5
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6480 KB Output is correct
2 Correct 2 ms 6480 KB Output is correct
3 Correct 1 ms 6480 KB Output is correct
4 Correct 1 ms 6480 KB Output is correct
5 Correct 2 ms 6616 KB Output is correct
6 Correct 1 ms 6480 KB Output is correct
7 Correct 1 ms 6480 KB Output is correct
8 Correct 2 ms 6480 KB Output is correct
9 Correct 1 ms 6480 KB Output is correct
10 Correct 2 ms 6480 KB Output is correct
11 Correct 3 ms 16720 KB Output is correct
12 Correct 2 ms 14672 KB Output is correct
13 Correct 2 ms 14672 KB Output is correct
14 Correct 3 ms 14672 KB Output is correct
15 Correct 2 ms 14672 KB Output is correct
16 Correct 2 ms 14672 KB Output is correct
17 Correct 2 ms 14672 KB Output is correct
18 Correct 2 ms 14672 KB Output is correct
19 Correct 2 ms 14672 KB Output is correct
20 Correct 3 ms 16720 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6480 KB Output is correct
2 Correct 2 ms 6480 KB Output is correct
3 Correct 1 ms 6480 KB Output is correct
4 Correct 1 ms 6480 KB Output is correct
5 Correct 2 ms 6616 KB Output is correct
6 Correct 1 ms 6480 KB Output is correct
7 Correct 1 ms 6480 KB Output is correct
8 Correct 2 ms 6480 KB Output is correct
9 Correct 1 ms 6480 KB Output is correct
10 Correct 2 ms 6480 KB Output is correct
11 Correct 3 ms 16720 KB Output is correct
12 Correct 2 ms 14672 KB Output is correct
13 Correct 2 ms 14672 KB Output is correct
14 Correct 3 ms 14672 KB Output is correct
15 Correct 2 ms 14672 KB Output is correct
16 Correct 2 ms 14672 KB Output is correct
17 Correct 2 ms 14672 KB Output is correct
18 Correct 2 ms 14672 KB Output is correct
19 Correct 2 ms 14672 KB Output is correct
20 Correct 3 ms 16720 KB Output is correct
21 Correct 11 ms 86560 KB Output is correct
22 Correct 18 ms 86608 KB Output is correct
23 Correct 12 ms 86608 KB Output is correct
24 Correct 11 ms 86608 KB Output is correct
25 Correct 11 ms 88656 KB Output is correct
26 Correct 11 ms 88732 KB Output is correct
27 Correct 11 ms 88824 KB Output is correct
28 Correct 10 ms 88656 KB Output is correct
29 Correct 9 ms 88656 KB Output is correct
30 Correct 9 ms 86660 KB Output is correct

Subtask #7
0 / 29.0

# Verdict Execution time Memory Grader output
1 Runtime error 410 ms 262144 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -