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Submission #218737

# Submission time Handle Problem Language Result Execution time Memory
218737 2020-04-02T15:44:56 Z someone_aa K blocks (IZhO14_blocks) C++17
0 / 100
 11 ms 4736 KB 
#include <bits/stdc++.h>
#define ll long long
#define pb push_back
#define mp make_pair
using namespace std;
const int maxn = 100100;
const int maxk = 110;
int n, k;
int dp[maxn][maxk];
int arr[maxn];

int main() {
	ios_base::sync_with_stdio(false);
	cin.tie(0);

	cin>>n>>k;
	int prefmax = 0;

	for(int i=0;i<=n;i++) {
		for(int j=0;j<=k;j++) {
			dp[i][j] = INT_MAX;
		}
	}

	for(int i=1;i<=n;i++) {
		cin>>arr[i];
		prefmax = max(prefmax, arr[i]);
		dp[i][1] = prefmax;
	}


	for(int d=2;d<=k;d++) {
		stack<int>dps, arrs;
		for(int i=1;i<=n;i++) {
			int curr = dp[i-1][d-1];

			while(!arrs.empty() && arrs.top() < arr[i]) {
				curr = min(curr, dps.top());
				arrs.pop();
				dps.pop();
			}

			if(arrs.empty() || arrs.top() + dps.top() >= curr + arr[i]) {
				arrs.push(arr[i]);
				dps.push(curr);
			}

			if(i >= d) dp[i][d] = arrs.top() + dps.top();
		}
	}
	cout<<dp[n][k]<<"\n";
}

Subtask #1
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Incorrect 4 ms 384 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #2
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Incorrect 5 ms 256 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #3
0 / 21.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 384 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 47.0

# Verdict Execution time Memory Grader output
1 Incorrect 11 ms 4736 KB Output isn't correct
2 Halted 0 ms 0 KB -