Submission #761161

#	Time	Username	Problem	Language	Result	Execution time	Memory
761161		ksu2009en	Peru (RMI20_peru)	C++17	18 / 100	659 ms	9204 KiB

peru

#include "peru.h"
#include <iostream>
#include <vector>
#include <string>
#include <math.h>
#include <cmath>
#include <iomanip>
#include <cstdio>
#include <algorithm>
#include <numeric>
#include <map>
#include <set>
#include <queue>
#include <stack>
#include <deque>
#include <bitset>
#include <cstring>
#include <unordered_map>

using namespace std;
typedef long long ll;

ll const mod = (ll)(1e9 + 7);

int solve(int n, int k, int* a){
    vector<ll>dp(n);
    
    dp[0] = a[0];
    
    for(int i = 1; i < n; i++){
        dp[i] = (dp[i - 1] + (ll)a[i]);
        
        ll mx = 0;
        for(int j = i; j >= max(0, i - k + 1); j--){
            mx = max(mx, (ll)a[j]);
            
            dp[i] = min(dp[i], (mx + (j - 1 >= 0 ? dp[j - 1] : 0)));
        }
    }
    
    ll p = 1;
    
    ll ans = 0;
    for(int i = n - 1; i >= 0; i--){
        dp[i] %= mod;
        
        ans = (ans + (p * dp[i]) % mod) % mod;
        
        p = (p * 23) % mod;
    }
    
    
    return ans;
}

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