Submission #13117

#TimeUTC-0UsernameProblemLanguageResultExecution timeMemory
131172015-01-31 09:35:46gs14004K blocks (IZhO14_blocks)C++14
100 / 100
227 ms43248 KiB
#include <cstdio>
#include <cstring>
#include <stack>
#include <algorithm>
using namespace std;
int dp[105][100005];
int a[100005];
int n,k;
int main(){
scanf("%d %d",&n,&k);
int maxv = 0;
memset(dp,0x3f,sizeof(dp));
for (int i=1; i<=n; i++) {
scanf("%d",&a[i]);
maxv = max(maxv,a[i]);
dp[1][i] = maxv;
}
for (int i=2; i<=k; i++) {
stack<int> s1,s2;
for (int j=1; j<=n; j++) {
int my_dp = dp[i-1][j-1];
while (!s1.empty() && s1.top() < a[j]) {
my_dp = min(my_dp,s2.top());
s1.pop();
s2.pop();
}
if(s1.empty() || my_dp + a[j] < s1.top() + s2.top()){
s1.push(a[j]);
 
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