oj.uz

Submission #28888

# Submission time Handle Problem Language Result Execution time Memory
28888 2017-07-17T12:07:40 Z ulna K blocks (IZhO14_blocks) C++11
100 / 100
 213 ms 64112 KB 
#include <bits/stdc++.h>
using namespace std;

// why am I so weak

int n, k;
int a[100055];

int dp[155][100055];

typedef pair<int, int> P;

#define ft first
#define sd second

P p[100055];

int main() {
	scanf("%d %d", &n, &k);

	for (int i = 1; i <= n; i++) {
		scanf("%d", &a[i]);
	}

	memset(dp, 63, sizeof(dp));

	dp[0][0] = 0;

	for (int i = 1; i <= k; i++) {
		stack<P> sta;

		sta.push(P(0x3f3f3f3f, 0x3f3f3f3f));

		for (int j = 1; j <= n; j++) {
			int low = dp[i - 1][j - 1];

			while (!sta.empty() && sta.top().ft <= a[j]) {
				low = min(low, sta.top().sd);
				sta.pop();
			}

			dp[i][j] = min(sta.top().ft + sta.top().sd, a[j] + low);

			if (sta.top().ft + sta.top().sd > a[j] + low) {
				sta.push(P(a[j], low));
			}
		}	
	}

	printf("%d\n", dp[k][n]);

	return 0;
}

Compilation message

blocks.cpp: In function 'int main()':
blocks.cpp:19:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d", &n, &k);
                        ^
blocks.cpp:22:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &a[i]);
                     ^

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 63772 KB Output is correct
2 Correct 3 ms 63772 KB Output is correct
3 Correct 3 ms 63772 KB Output is correct
4 Correct 3 ms 63772 KB Output is correct
5 Correct 0 ms 63772 KB Output is correct
6 Correct 9 ms 63772 KB Output is correct
7 Correct 9 ms 63772 KB Output is correct
8 Correct 3 ms 63772 KB Output is correct
9 Correct 6 ms 63772 KB Output is correct
10 Correct 3 ms 63772 KB Output is correct
11 Correct 3 ms 63772 KB Output is correct
12 Correct 3 ms 63772 KB Output is correct
13 Correct 6 ms 63772 KB Output is correct
14 Correct 0 ms 63772 KB Output is correct
15 Correct 6 ms 63772 KB Output is correct
16 Correct 3 ms 63772 KB Output is correct
17 Correct 3 ms 63772 KB Output is correct
18 Correct 0 ms 63772 KB Output is correct

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 63772 KB Output is correct
2 Correct 0 ms 63772 KB Output is correct
3 Correct 3 ms 63772 KB Output is correct
4 Correct 0 ms 63772 KB Output is correct
5 Correct 3 ms 63772 KB Output is correct
6 Correct 3 ms 63772 KB Output is correct
7 Correct 9 ms 63772 KB Output is correct
8 Correct 6 ms 63772 KB Output is correct
9 Correct 9 ms 63772 KB Output is correct
10 Correct 3 ms 63772 KB Output is correct
11 Correct 6 ms 63772 KB Output is correct
12 Correct 3 ms 63772 KB Output is correct
13 Correct 13 ms 63772 KB Output is correct
14 Correct 0 ms 63772 KB Output is correct
15 Correct 6 ms 63772 KB Output is correct
16 Correct 3 ms 63772 KB Output is correct
17 Correct 3 ms 63772 KB Output is correct
18 Correct 9 ms 63772 KB Output is correct
19 Correct 9 ms 63772 KB Output is correct
20 Correct 3 ms 63772 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 63772 KB Output is correct
2 Correct 6 ms 63772 KB Output is correct
3 Correct 0 ms 63772 KB Output is correct
4 Correct 3 ms 63772 KB Output is correct
5 Correct 6 ms 63772 KB Output is correct
6 Correct 3 ms 63772 KB Output is correct
7 Correct 0 ms 63772 KB Output is correct
8 Correct 0 ms 63772 KB Output is correct
9 Correct 6 ms 63772 KB Output is correct
10 Correct 6 ms 63772 KB Output is correct
11 Correct 6 ms 63772 KB Output is correct
12 Correct 3 ms 63772 KB Output is correct
13 Correct 9 ms 63772 KB Output is correct
14 Correct 9 ms 63772 KB Output is correct
15 Correct 3 ms 63772 KB Output is correct
16 Correct 0 ms 63772 KB Output is correct
17 Correct 3 ms 63772 KB Output is correct
18 Correct 0 ms 63772 KB Output is correct
19 Correct 0 ms 63772 KB Output is correct

Subtask #4
47.0 / 47.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 63772 KB Output is correct
2 Correct 13 ms 63772 KB Output is correct
3 Correct 16 ms 63772 KB Output is correct
4 Correct 43 ms 63772 KB Output is correct
5 Correct 146 ms 63772 KB Output is correct
6 Correct 16 ms 63772 KB Output is correct
7 Correct 76 ms 63772 KB Output is correct
8 Correct 6 ms 63772 KB Output is correct
9 Correct 0 ms 63772 KB Output is correct
10 Correct 6 ms 63772 KB Output is correct
11 Correct 3 ms 63772 KB Output is correct
12 Correct 3 ms 63772 KB Output is correct
13 Correct 3 ms 63772 KB Output is correct
14 Correct 16 ms 63772 KB Output is correct
15 Correct 6 ms 63772 KB Output is correct
16 Correct 13 ms 63772 KB Output is correct
17 Correct 9 ms 63772 KB Output is correct
18 Correct 26 ms 63772 KB Output is correct
19 Correct 43 ms 63772 KB Output is correct
20 Correct 119 ms 63772 KB Output is correct
21 Correct 19 ms 63772 KB Output is correct
22 Correct 59 ms 63772 KB Output is correct
23 Correct 23 ms 63772 KB Output is correct
24 Correct 26 ms 63772 KB Output is correct
25 Correct 106 ms 63772 KB Output is correct
26 Correct 3 ms 63772 KB Output is correct
27 Correct 9 ms 63772 KB Output is correct
28 Correct 26 ms 63772 KB Output is correct
29 Correct 3 ms 63772 KB Output is correct
30 Correct 13 ms 63772 KB Output is correct
31 Correct 9 ms 63772 KB Output is correct
32 Correct 13 ms 63904 KB Output is correct
33 Correct 69 ms 63980 KB Output is correct
34 Correct 213 ms 64112 KB Output is correct
35 Correct 19 ms 64032 KB Output is correct
36 Correct 113 ms 64112 KB Output is correct
37 Correct 3 ms 63772 KB Output is correct
38 Correct 13 ms 63772 KB Output is correct
39 Correct 6 ms 63772 KB Output is correct
40 Correct 0 ms 63772 KB Output is correct
41 Correct 9 ms 63772 KB Output is correct
42 Correct 0 ms 63772 KB Output is correct