oj.uz

Submission #166638

# Submission time Handle Problem Language Result Execution time Memory
166638 2019-12-03T10:38:25 Z abil K blocks (IZhO14_blocks) C++14
100 / 100
 237 ms 40828 KB 
#include <bits/stdc++.h>

#define fr first
#define sc second
#define pb push_back
#define mk make_pair
#define all(s) s.begin(),s.end()
//#define int long long

using namespace std;

const int N = (1e5 + 12);
const int mod = (1e9 + 7);
const int INF = (0x3f3f3f3f);

int a[N], dp[112][N], n;

main()
{
	int k;
	scanf("%d%d", &n, &k);
	for(int i = 1;i <= n; i++){
		scanf("%d", &a[i]);
	}
	for(int i = 1;i <= n; i++){
		dp[1][i] = max(dp[1][i - 1], a[i]);
	}
	for(int i = 2;i <= k; i++){
		stack<pair<int,int > > st;
		dp[i][i] = dp[i - 1][i - 1] + a[i];
		st.push({dp[i - 1][i - 1],a[i]});
		for(int j = i + 1;j <= n; j++){
			int c = dp[i - 1][j - 1];
			while(!st.empty() && st.top().sc <= a[j]){
				c = min(c, st.top().fr);
				st.pop();
			}
			if(st.empty() || st.top().fr + st.top().sc > c + a[j]){
				st.push({c, a[j]});
			}
			dp[i][j] = st.top().fr + st.top().sc;
		}
	}
	cout << dp[k][n];
}

Compilation message

blocks.cpp:18:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main()
      ^
blocks.cpp: In function 'int main()':
blocks.cpp:21:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d", &n, &k);
  ~~~~~^~~~~~~~~~~~~~~~
blocks.cpp:23:8: 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 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 300 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 368 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 4 ms 352 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 380 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 376 KB Output is correct

Subtask #2
18.0 / 18.0

# 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 376 KB Output is correct
4 Correct 2 ms 308 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 380 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 376 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 632 KB Output is correct
2 Correct 2 ms 380 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 4 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 504 KB Output is correct
14 Correct 2 ms 504 KB Output is correct
15 Correct 2 ms 888 KB Output is correct
16 Correct 3 ms 760 KB Output is correct
17 Correct 2 ms 504 KB Output is correct
18 Correct 3 ms 888 KB Output is correct
19 Correct 2 ms 760 KB Output is correct

Subtask #4
47.0 / 47.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 1528 KB Output is correct
2 Correct 10 ms 1016 KB Output is correct
3 Correct 13 ms 2012 KB Output is correct
4 Correct 56 ms 14328 KB Output is correct
5 Correct 159 ms 40540 KB Output is correct
6 Correct 18 ms 2552 KB Output is correct
7 Correct 78 ms 18936 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 504 KB Output is correct
10 Correct 2 ms 508 KB Output is correct
11 Correct 2 ms 504 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 504 KB Output is correct
14 Correct 20 ms 4856 KB Output is correct
15 Correct 4 ms 504 KB Output is correct
16 Correct 7 ms 1528 KB Output is correct
17 Correct 9 ms 1016 KB Output is correct
18 Correct 12 ms 2088 KB Output is correct
19 Correct 54 ms 14392 KB Output is correct
20 Correct 126 ms 40512 KB Output is correct
21 Correct 20 ms 2576 KB Output is correct
22 Correct 72 ms 19192 KB Output is correct
23 Correct 17 ms 1784 KB Output is correct
24 Correct 31 ms 5368 KB Output is correct
25 Correct 134 ms 40568 KB Output is correct
26 Correct 2 ms 376 KB Output is correct
27 Correct 2 ms 376 KB Output is correct
28 Correct 24 ms 4856 KB Output is correct
29 Correct 4 ms 504 KB Output is correct
30 Correct 8 ms 1528 KB Output is correct
31 Correct 8 ms 1016 KB Output is correct
32 Correct 14 ms 2164 KB Output is correct
33 Correct 81 ms 14440 KB Output is correct
34 Correct 237 ms 40828 KB Output is correct
35 Correct 20 ms 2768 KB Output is correct
36 Correct 113 ms 19224 KB Output is correct
37 Correct 4 ms 504 KB Output is correct
38 Correct 18 ms 4856 KB Output is correct
39 Correct 3 ms 376 KB Output is correct
40 Correct 2 ms 376 KB Output is correct
41 Correct 2 ms 376 KB Output is correct
42 Correct 2 ms 376 KB Output is correct