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Submission #90650

# Submission time Handle Problem Language Result Execution time Memory
90650 2018-12-23T09:02:29 Z popovicirobert K blocks (IZhO14_blocks) C++14
100 / 100
 343 ms 41560 KB 
#include <bits/stdc++.h>
#define lsb(x) (x & (-x))
#define ll long long
#define ull unsigned long long
#define ld long double
// 217
// 44

using namespace std;

const int INF = 1e9;
const int MAXN = (int) 1e5;
const int MAXK = 100;

int dp[MAXN + 1][MAXK + 1];
int arr[MAXN + 1];

int stk[MAXN + 1];
int best[MAXN + 1], mn_dp[MAXN + 1];

int main() {
    //ifstream cin("A.in");
    //ofstream cout("A.out");
    int i, j, n, k;
    ios::sync_with_stdio(false);
    cin.tie(0), cout.tie(0);
    cin >> n >> k;
    for(i = 1; i <= n; i++) {
        cin >> arr[i];
    }
    for(i = 1; i <= n; i++) {
        dp[i][1] = max(dp[i - 1][1], arr[i]);
    }
    dp[0][1] = INF;
    for(j = 2; j <= k; j++) {
        int sz = 0;
        dp[0][j] = best[0] = INF;
        for(i = 1; i <= n; i++) {
            int mn = INF;
            while(sz > 0 && arr[i] >= arr[stk[sz]]) {
                mn = min(mn, mn_dp[sz]);
                sz--;
            }
            stk[++sz] = i;
            best[sz] = min(best[sz - 1], min(mn, dp[stk[sz - 1]][j - 1]) + arr[i]);
            mn_dp[sz] = min(mn, dp[i][j - 1]);
            dp[i][j] = best[sz];
        }
    }
    cout << dp[n][k];
    //cin.close();
    //cout.close();
    return 0;
}

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 452 KB Output is correct
4 Correct 2 ms 592 KB Output is correct
5 Correct 2 ms 592 KB Output is correct
6 Correct 2 ms 592 KB Output is correct
7 Correct 2 ms 592 KB Output is correct
8 Correct 2 ms 592 KB Output is correct
9 Correct 2 ms 592 KB Output is correct
10 Correct 2 ms 592 KB Output is correct
11 Correct 2 ms 592 KB Output is correct
12 Correct 2 ms 652 KB Output is correct
13 Correct 2 ms 652 KB Output is correct
14 Correct 2 ms 652 KB Output is correct
15 Correct 2 ms 652 KB Output is correct
16 Correct 2 ms 652 KB Output is correct
17 Correct 2 ms 652 KB Output is correct
18 Correct 2 ms 652 KB Output is correct

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 652 KB Output is correct
2 Correct 2 ms 652 KB Output is correct
3 Correct 2 ms 652 KB Output is correct
4 Correct 2 ms 652 KB Output is correct
5 Correct 2 ms 780 KB Output is correct
6 Correct 2 ms 780 KB Output is correct
7 Correct 2 ms 780 KB Output is correct
8 Correct 2 ms 780 KB Output is correct
9 Correct 2 ms 780 KB Output is correct
10 Correct 2 ms 780 KB Output is correct
11 Correct 2 ms 780 KB Output is correct
12 Correct 2 ms 780 KB Output is correct
13 Correct 2 ms 780 KB Output is correct
14 Correct 2 ms 780 KB Output is correct
15 Correct 2 ms 780 KB Output is correct
16 Correct 2 ms 780 KB Output is correct
17 Correct 2 ms 780 KB Output is correct
18 Correct 2 ms 780 KB Output is correct
19 Correct 2 ms 780 KB Output is correct
20 Correct 2 ms 780 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 780 KB Output is correct
2 Correct 2 ms 780 KB Output is correct
3 Correct 2 ms 780 KB Output is correct
4 Correct 2 ms 816 KB Output is correct
5 Correct 2 ms 816 KB Output is correct
6 Correct 2 ms 816 KB Output is correct
7 Correct 2 ms 816 KB Output is correct
8 Correct 2 ms 816 KB Output is correct
9 Correct 2 ms 816 KB Output is correct
10 Correct 2 ms 816 KB Output is correct
11 Correct 2 ms 816 KB Output is correct
12 Correct 2 ms 816 KB Output is correct
13 Correct 2 ms 816 KB Output is correct
14 Correct 2 ms 816 KB Output is correct
15 Correct 2 ms 816 KB Output is correct
16 Correct 2 ms 816 KB Output is correct
17 Correct 2 ms 816 KB Output is correct
18 Correct 2 ms 816 KB Output is correct
19 Correct 2 ms 816 KB Output is correct

Subtask #4
47.0 / 47.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 4748 KB Output is correct
2 Correct 18 ms 18444 KB Output is correct
3 Correct 24 ms 18456 KB Output is correct
4 Correct 70 ms 18456 KB Output is correct
5 Correct 252 ms 41228 KB Output is correct
6 Correct 44 ms 41228 KB Output is correct
7 Correct 119 ms 41228 KB Output is correct
8 Correct 2 ms 41228 KB Output is correct
9 Correct 2 ms 41228 KB Output is correct
10 Correct 2 ms 41228 KB Output is correct
11 Correct 2 ms 41228 KB Output is correct
12 Correct 2 ms 41228 KB Output is correct
13 Correct 2 ms 41228 KB Output is correct
14 Correct 17 ms 41228 KB Output is correct
15 Correct 6 ms 41228 KB Output is correct
16 Correct 8 ms 41228 KB Output is correct
17 Correct 19 ms 41228 KB Output is correct
18 Correct 24 ms 41228 KB Output is correct
19 Correct 64 ms 41228 KB Output is correct
20 Correct 343 ms 41236 KB Output is correct
21 Correct 46 ms 41236 KB Output is correct
22 Correct 142 ms 41236 KB Output is correct
23 Correct 40 ms 41236 KB Output is correct
24 Correct 66 ms 41236 KB Output is correct
25 Correct 313 ms 41236 KB Output is correct
26 Correct 2 ms 41236 KB Output is correct
27 Correct 3 ms 41236 KB Output is correct
28 Correct 15 ms 41236 KB Output is correct
29 Correct 6 ms 41236 KB Output is correct
30 Correct 8 ms 41236 KB Output is correct
31 Correct 18 ms 41236 KB Output is correct
32 Correct 24 ms 41236 KB Output is correct
33 Correct 59 ms 41236 KB Output is correct
34 Correct 192 ms 41560 KB Output is correct
35 Correct 44 ms 41560 KB Output is correct
36 Correct 98 ms 41560 KB Output is correct
37 Correct 6 ms 41560 KB Output is correct
38 Correct 14 ms 41560 KB Output is correct
39 Correct 3 ms 41560 KB Output is correct
40 Correct 2 ms 41560 KB Output is correct
41 Correct 2 ms 41560 KB Output is correct
42 Correct 2 ms 41560 KB Output is correct