Submission #1008500

#	Time	Username	Problem	Language	Result	Execution time	Memory
1008500		VMaksimoski008	K blocks (IZhO14_blocks)	C++17	0 / 100	1 ms	860 KiB

blocks

#include <iostream>
using namespace std; 
using ll = long long;
 
const int LOG = 20;
const int maxn = 1e5 + 5;

int log_dp[maxn+5];
int T[maxn+5][LOG];
ll dp[maxn+5][105];

int query(int l, int r) {
    int k = log_dp[r-l+1];
    return max(T[l][k], T[r-(1<<k)+1][k]);
}

void f(int l, int r, int tl, int tr, int j) {
    if(l > r) return ;
    int tm = (l + r) / 2, p = tl;

    for(int i=tl; i<=min(tm, tr); i++) {
        ll v = dp[i-1][j-1] + query(i, tm);
        if(v < dp[tm][j]) {
            dp[tm][j] = v;
            p = i;
        }
    }

    f(l, tm-1, tl, p, j);
    f(tm+1, r, p, tr, j);
}
 
signed main() {
    log_dp[1] = 0;
    for(int i=2; i<=maxn; i++) log_dp[i] = log_dp[i/2] + 1;

    int n, k;
    cin >> n >> k;
 
    int v[n+1];
    for(int i=1; i<=n; i++) cin >> v[i], T[i][0] = v[i];

    for(int j=1; j<LOG; j++)
        for(int i=1; i+(1<<j)-1<=n; i++)
            T[i][j] = max(T[i][j-1], T[i+(1<<(j-1))][j-1]);
    for(int i=0; i<=n; i++)
        for(int j=0; j<=k; j++) dp[i][j] = 1e18;
 
    dp[0][0] = 0;
    for(int j=1; j<=k; j++) f(1, n, 1, n, j);
    cout << dp[n][k] << '\n';
    return 0;
}

• Subtask 1: 0 / 14
• Subtask 2: 0 / 18
• Subtask 3: 0 / 21
• Subtask 4: 0 / 47