Submission #859643

#	Time	Username	Problem	Language	Result	Execution time	Memory
859643		Tudy006	Peru (RMI20_peru)	C++14	18 / 100	923 ms	13256 KiB

peru

#include <bits/stdc++.h>
#include "peru.h"

using namespace std;

const int NMAX = 2500000;
const int MOD = 1e9 + 7;

long long dp[NMAX];

int solve( int n, int k, int* v ) {
    deque <int> dq;

    int ans = 0;
    for ( int i = 0; i < n; i ++ ) {
        while ( !dq.empty() && v[dq.back()] <= v[i] ) dq.pop_back();
        dq.push_back( i );
        if ( dq.front() <= i - k ) dq.pop_front();
        dp[i] = v[dq.front()] + ( i >= k ? dp[i - k] : 0 );
        for ( int j = 1; j < (int)dq.size(); j ++ ) {
            dp[i] = min( dp[i], dp[dq[j - 1]] + v[dq[j]] );
        }
        ans = ( (long long)ans * 23 + dp[i] ) % MOD;
    }
    dq.clear();
    return ans;
}

• Subtask 1: 18 / 18
• Subtask 2: 0 / 31
• Subtask 3: 0 / 51