Submission #1224307

#	Time	Username	Problem	Language	Result	Execution time	Memory
1224307		Muhammad_Aneeq	Peru (RMI20_peru)	C++20	0 / 100	123 ms	78720 KiB

peru

#include "peru.h"
#include <iostream>
#include <deque>
#include <set>
#include <vector>
using namespace std;
int const mod=1e9+7;
int solve(int n, int k, int* v)
{
    vector<int>a;
    a.push_back(2e9+10);
    for (int i=0;i<n;i++)
        a.push_back(v[i]);
    long long dp[n+10]={};
    dp[0]=0;
    long long pw[n+10]={};
    long long val[n+10]={};
    pw[0]=1;
    deque<int>q;
    for (int i=1;i<=n;i++)
    {
        dp[i]=1e18+10;
        while (q.size()&&a[q.back()]<=a[i])
            q.pop_back();
        while (q.size()&&q.front()<=i-k)
                q.pop_front();
        q.push_back(i);
        dp[i]=dp[max(0,i-k)]+a[q.front()];
        for (int j=0;j+1<q.size();j++)
        {
            dp[i]=min(dp[q[j]]+q[j+1],dp[i]);
            break;
        }
        pw[i]=(pw[i-1]*23ll)%mod;
    }
    long long ans=0;
    for (int i=1;i<=n;i++)
    {
        dp[i]%=mod;
        ans=ans+(dp[i]*pw[n-i])%mod;
        ans%=mod;
    }
    return ans;
}

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