제출 #1119939

#제출 시각아이디문제언어결과실행 시간메모리
1119939HuyATK개의 묶음 (IZhO14_blocks)C++14
0 / 100
2 ms8540 KiB
#include<bits/stdc++.h> #define newl '\n' const int N = 1e5 + 10; const int K = 1e2 + 10; const int V = 1e7 + 10; const long long INF = 1e18; const long long M = 1e9 + 7; long long a[N + 1],n,k; long long f[K + 1][N + 1]; void readData(){ std::cin >> n >> k; for(int i = 1;i <= n;++i){ std::cin >> a[i]; } } long long solve(){ for(int i = 0;i <= k;++i){ for(int j = 0;j <= n;++j){ f[i][j] = INF; } } f[0][0] = 0; for(int i = 1;i <= k;++i){ std::stack<std::pair<int,long long>> st; for(int j = 1;j <= n;++j){ long long min_f = f[i - 1][j - 1]; while(!st.empty() && a[j] >= a[st.top().first]){ min_f = std::min(min_f,st.top().second); st.pop(); } f[i][j] = std::min(f[i][st.empty() ? 0 : st.top().first],min_f + a[j]); st.push({i,min_f}); } } return f[k][n]; } int main(){ std::ios_base::sync_with_stdio(false); std::cin.tie(nullptr);std::cout.tie(nullptr); readData(); std::cout << solve(); return 0; }
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