Submission #645875

#	Time	Username	Problem	Language	Result	Execution time	Memory
645875		Vanilla	Peru (RMI20_peru)	C++17	0 / 100	2 ms	340 KiB

peru

#include <bits/stdc++.h>
#include "peru.h"
using namespace std;
typedef long long int64;
const int maxn = 2e3 + 2;
const int64 mod = 1e9 + 7;
int64 dp [maxn];
int64 pw [maxn];

int solve(int n, int k, int* v){
    pw[n-1] = 1;
    for (int i = n - 2; i >= 0; i--){
        pw[i] = (pw[i + 1] * 23) % mod;
    }
    int mx = 0;
    for (int i = 0; i < k; i++){
        mx = max(mx, v[i]);
        dp[i] = mx;
    }
    for (int i = k; i < n; i++){
        int mx = 0;
        for (int j = i - k + 1; j <= i; j++){
            mx = max(mx, v[j]);
        }
        dp[i] = dp[i - k] + mx;
    }
    int64 rs = 0;
    for (int i = 0; i < n; i++){
        rs = (rs + dp[i] * pw[i]) % mod;
    }
    return rs;
}

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