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답안 #930358

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
930358 2024-02-19T12:51:46 Z vjudge1 Feast (NOI19_feast) C++17
41 / 100
 23 ms 32088 KB 
#include <bits/stdc++.h>
#define int long long

using namespace std;

template<typename T>
inline bool maxi(T &x, const T &val)
{
    if (x < val) return x = val, true;
    return false;
}

template<typename T>
inline bool mini(T &x, const T &val)
{
    if (x > val) return x = val, true;
    return false;
}

const int maxn = 2010;
int n, k;
int a[maxn], S[maxn];
int dp[maxn][maxn];

void solve()
{
    cin >> n >> k;
    for (int i = 1; i <= n; i++) cin >> a[i], S[i] = S[i - 1] + a[i];
    for (int i = 1; i <= n; i++) {
        int cur = 0;
        for (int j = 1; j <= n; j++) {
            maxi(dp[i][j], dp[i][j - 1]);
            maxi(dp[i][j], dp[i - 1][j]);
            maxi(dp[i][j], cur + S[j]);
            maxi(cur, dp[i - 1][j] - S[j]);
        }
    }
    cout << dp[k][n] << '\n';
}

signed main()
{
#ifdef LOCAL
    clock_t st = clock();
#endif
    ios_base::sync_with_stdio(false);
    cin.tie(0);

#define Task ""
#ifdef LOCAL
    if (!fopen("D:\\.inp", "r")) {
        freopen("D:\\.inp", "w", stdout);
        freopen("D:\\.out", "w", stdout);
        cerr << "get input from file\n";
        return 0;
    }
    freopen("D:\\.inp", "r", stdin);
    freopen("D:\\.out", "w", stdout);
#else
    if (fopen(Task".inp", "r")) {
        freopen(Task".inp", "r", stdin);
        freopen(Task".out", "w", stdout);
    }
#endif

    solve();

#ifdef LOCAL
    cerr << clock() - st << endl;
#endif
}

Compilation message

feast.cpp: In function 'int main()':
feast.cpp:61:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   61 |         freopen(Task".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
feast.cpp:62:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   62 |         freopen(Task".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 2 ms 600 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #2
0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 4 ms 7128 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 2 ms 604 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #4
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 604 KB Output is correct
2 Correct 1 ms 604 KB Output is correct
3 Correct 0 ms 604 KB Output is correct
4 Correct 1 ms 604 KB Output is correct
5 Correct 1 ms 600 KB Output is correct
6 Correct 0 ms 604 KB Output is correct
7 Correct 0 ms 604 KB Output is correct
8 Correct 1 ms 604 KB Output is correct
9 Correct 1 ms 600 KB Output is correct
10 Correct 1 ms 604 KB Output is correct

Subtask #5
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 604 KB Output is correct
2 Correct 1 ms 604 KB Output is correct
3 Correct 0 ms 604 KB Output is correct
4 Correct 1 ms 604 KB Output is correct
5 Correct 1 ms 600 KB Output is correct
6 Correct 0 ms 604 KB Output is correct
7 Correct 0 ms 604 KB Output is correct
8 Correct 1 ms 604 KB Output is correct
9 Correct 1 ms 600 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 2 ms 2140 KB Output is correct
12 Correct 1 ms 1884 KB Output is correct
13 Correct 1 ms 1884 KB Output is correct
14 Correct 1 ms 2140 KB Output is correct
15 Correct 1 ms 2136 KB Output is correct
16 Correct 1 ms 1884 KB Output is correct
17 Correct 1 ms 2140 KB Output is correct
18 Correct 1 ms 2136 KB Output is correct
19 Correct 1 ms 1884 KB Output is correct
20 Correct 1 ms 2140 KB Output is correct

Subtask #6
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 604 KB Output is correct
2 Correct 1 ms 604 KB Output is correct
3 Correct 0 ms 604 KB Output is correct
4 Correct 1 ms 604 KB Output is correct
5 Correct 1 ms 600 KB Output is correct
6 Correct 0 ms 604 KB Output is correct
7 Correct 0 ms 604 KB Output is correct
8 Correct 1 ms 604 KB Output is correct
9 Correct 1 ms 600 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 2 ms 2140 KB Output is correct
12 Correct 1 ms 1884 KB Output is correct
13 Correct 1 ms 1884 KB Output is correct
14 Correct 1 ms 2140 KB Output is correct
15 Correct 1 ms 2136 KB Output is correct
16 Correct 1 ms 1884 KB Output is correct
17 Correct 1 ms 2140 KB Output is correct
18 Correct 1 ms 2136 KB Output is correct
19 Correct 1 ms 1884 KB Output is correct
20 Correct 1 ms 2140 KB Output is correct
21 Correct 20 ms 31068 KB Output is correct
22 Correct 20 ms 30720 KB Output is correct
23 Correct 20 ms 31068 KB Output is correct
24 Correct 22 ms 30920 KB Output is correct
25 Correct 22 ms 31836 KB Output is correct
26 Correct 21 ms 32088 KB Output is correct
27 Correct 23 ms 31856 KB Output is correct
28 Correct 22 ms 31572 KB Output is correct
29 Correct 21 ms 31320 KB Output is correct
30 Correct 20 ms 30976 KB Output is correct

Subtask #7
0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 2 ms 600 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -