Submission #859616

#	Time	Username	Problem	Language	Result	Execution time	Memory
859616		Tudy006	Peru (RMI20_peru)	C++14	0 / 100	2 ms	2396 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;

//    cout << n << ' ' << k << endl;
    for ( int i = 0; i < n; i ++ ) {
        while ( !dq.empty() && v[dq.back()] <= v[i] ) dq.pop_back();
        dq.push_back( i );
//        cout << i << ": ";
//        for ( auto x : dq ) cout << x << ' ';
//        cout << endl;
        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]] );
        }
    }
    int ans = 0;
    for ( int i = 0; i < n; i ++ ) {
        ans = ( (long long)ans * 23 + dp[i] ) % MOD;
//        cout << dp[i] << ' ';
    }
//    cout << endl;
    return ans;
}

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