Submission #1297106

#	Time	Username	Problem	Language	Result	Execution time	Memory
1297106		efeg	Peru (RMI20_peru)	C++20	0 / 100	1098 ms	31040 KiB

peru

#include <bits/stdc++.h>
#include "peru.h"
using namespace std; 

using i64 = long long; 

const int MOD = 1e9 + 7; 

i64 add(i64 x,i64 y){
    return (x % MOD + y % MOD) % MOD; 
}
i64 mul(i64 x,i64 y){
    return (x % MOD * (y % MOD)) % MOD; 
}

int solve(int n, int k, int* v){
    vector<i64> dp(n + 1,2e18);
    
    i64 mx = 0; 
    
    for (int i = 0; i < k-1; i++){
        mx = max(mx,(i64) v[i]); 
        dp[i] = mx; 
        cerr << dp[i] << " ";  
    }

    for (int i = k-1; i < n; i++){
        mx = v[i]; 
        for (int j = i-1; j >= max(i - k,0); j--){
            dp[i] = min(dp[i], add(dp[j],mx)); 
            mx = max(mx,(i64) v[j]); 
        }
        cerr << dp[i] << " "; 
    }

    i64 pw = 1,ans = 0; 
    for (int i = n-1; i > -1; i--){
        ans = add(ans,mul(dp[i],pw));
        pw = mul(pw,23); 
    }

    return ans; 
}

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