oj.uz

Submission #41327

# Submission time Handle Problem Language Result Execution time Memory
41327 2018-02-16T10:11:23 Z IvanC K blocks (IZhO14_blocks) C++14
53 / 100
 1000 ms 3256 KB 
#include <bits/stdc++.h>
using namespace std;
typedef pair<int,int> ii;
const int INF = 1e9;
const int MAXN = 1e5  + 10;
int vetor[MAXN],dp[MAXN],novadp[MAXN],menor[MAXN],napilha[MAXN],N,K;
void solve(int k){
	for(int i = 0;i<=N;i++){
		novadp[i] = INF;
		napilha[i] = 0;
	}
	stack<int> pilha;
	priority_queue<ii, vector<ii>, greater<ii> > pq;
	for(int i = k;i<=N;i++){
		menor[i] = dp[i-1];
		while(!pilha.empty() && vetor[i] >= vetor[pilha.top()]){
			menor[i] = min(menor[i],menor[pilha.top()]);
			napilha[pilha.top()] = 0;
			pilha.pop();
		}
		pq.push(ii(menor[i] + vetor[i],i));
		pilha.push(i);
		napilha[i] = 1;
		while(!pq.empty() && !napilha[pq.top().second]){
			pq.pop();
		}
		if(!pq.empty()) novadp[i] = pq.top().first;
	}
	for(int i = 1;i<=N;i++) dp[i] = novadp[i];
	while(!pilha.empty()) pilha.pop();
	while(!pq.empty()) pq.pop();
}
int main(){
	scanf("%d %d",&N,&K);
	vetor[0] = dp[0] = INF;
	for(int i = 1;i<=N;i++){
		scanf("%d",&vetor[i]);
	}
	dp[1] = vetor[1];
	for(int i = 2;i<=N;i++) dp[i] = max(dp[i-1],vetor[i]);
	for(int k = 2;k<=K;k++) solve(k);
	printf("%d\n",dp[N]);
	return 0;
}

Compilation message

blocks.cpp: In function 'int main()':
blocks.cpp:34:22: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d",&N,&K);
                      ^
blocks.cpp:37:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&vetor[i]);
                        ^

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 248 KB Output is correct
2 Correct 1 ms 352 KB Output is correct
3 Correct 1 ms 424 KB Output is correct
4 Correct 1 ms 440 KB Output is correct
5 Correct 1 ms 480 KB Output is correct
6 Correct 1 ms 596 KB Output is correct
7 Correct 2 ms 596 KB Output is correct
8 Correct 1 ms 596 KB Output is correct
9 Correct 1 ms 596 KB Output is correct
10 Correct 1 ms 596 KB Output is correct
11 Correct 1 ms 596 KB Output is correct
12 Correct 1 ms 596 KB Output is correct
13 Correct 1 ms 596 KB Output is correct
14 Correct 1 ms 604 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 1 ms 624 KB Output is correct
17 Correct 1 ms 624 KB Output is correct
18 Correct 1 ms 624 KB Output is correct

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 624 KB Output is correct
2 Correct 1 ms 624 KB Output is correct
3 Correct 1 ms 624 KB Output is correct
4 Correct 2 ms 624 KB Output is correct
5 Correct 1 ms 624 KB Output is correct
6 Correct 1 ms 624 KB Output is correct
7 Correct 1 ms 624 KB Output is correct
8 Correct 2 ms 624 KB Output is correct
9 Correct 2 ms 624 KB Output is correct
10 Correct 1 ms 624 KB Output is correct
11 Correct 1 ms 624 KB Output is correct
12 Correct 1 ms 624 KB Output is correct
13 Correct 1 ms 624 KB Output is correct
14 Correct 1 ms 624 KB Output is correct
15 Correct 1 ms 624 KB Output is correct
16 Correct 1 ms 624 KB Output is correct
17 Correct 1 ms 624 KB Output is correct
18 Correct 1 ms 624 KB Output is correct
19 Correct 1 ms 624 KB Output is correct
20 Correct 1 ms 624 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 624 KB Output is correct
2 Correct 1 ms 624 KB Output is correct
3 Correct 2 ms 624 KB Output is correct
4 Correct 1 ms 624 KB Output is correct
5 Correct 1 ms 624 KB Output is correct
6 Correct 2 ms 624 KB Output is correct
7 Correct 1 ms 624 KB Output is correct
8 Correct 2 ms 624 KB Output is correct
9 Correct 1 ms 624 KB Output is correct
10 Correct 2 ms 624 KB Output is correct
11 Correct 2 ms 736 KB Output is correct
12 Correct 2 ms 736 KB Output is correct
13 Correct 2 ms 736 KB Output is correct
14 Correct 2 ms 736 KB Output is correct
15 Correct 2 ms 736 KB Output is correct
16 Correct 2 ms 736 KB Output is correct
17 Correct 2 ms 736 KB Output is correct
18 Correct 2 ms 736 KB Output is correct
19 Correct 2 ms 736 KB Output is correct

Subtask #4
0 / 47.0

# Verdict Execution time Memory Grader output
1 Correct 35 ms 884 KB Output is correct
2 Correct 13 ms 884 KB Output is correct
3 Correct 49 ms 1716 KB Output is correct
4 Correct 430 ms 2016 KB Output is correct
5 Execution timed out 1047 ms 3256 KB Time limit exceeded
6 Halted 0 ms 0 KB -