Submission #1061931

#TimeUsernameProblemLanguageResultExecution timeMemory
1061931VMaksimoski008K blocks (IZhO14_blocks)C++17
100 / 100
124 ms42884 KiB
#include <bits/stdc++.h> using namespace std; const int maxn = 1e5 + 5; int dp[maxn][105], v[maxn]; int main() { int n, k; cin >> n >> k; for(int i=0; i<=n; i++) for(int j=0; j<=k; j++) dp[i][j] = 1e9; for(int i=1; i<=n; i++) cin >> v[i]; dp[0][0] = 0; int mx = 0; for(int i=1; i<=n; i++) { mx = max(mx, v[i]); dp[i][1] = mx; } for(int j=2; j<=k; j++) { stack<int> st1, st2; for(int i=1; i<=n; i++) { int mn = dp[i-1][j-1]; while(!st1.empty() && st1.top() <= v[i]) { mn = min(mn, st2.top()); st1.pop(); st2.pop(); } if(st1.empty() || mn + v[i] < st1.top() + st2.top()) { st1.push(v[i]); st2.push(mn); } dp[i][j] = st1.top() + st2.top(); } } cout << dp[n][k] << '\n'; return 0; }
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