Submission #645315

#	Time	Username	Problem	Language	Result	Execution time	Memory
645315		notme	Mean (info1cup19_mean)	C++14	100 / 100	4 ms	596 KiB

mean

#include<bits/stdc++.h>
#define endl '\n'
using namespace std;
const long long MAXN = 205;
void speed()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
}
long long n, a[MAXN];
long long dp[MAXN][MAXN];
void solve()
{
    cin >> n;
    for (long long i = 1; i <= n; ++ i)
        cin >> a[i];
    for (int i = 1; i <= n; ++ i)
        dp[i][1] = a[i];
    for (int len = 2; len <= n; ++ len)
    {
        for (int i = 1; i + len - 1 <= n; ++ i)
        {
            int j = i + len - 1;
            for (int k = 1; k <= len-1; ++ k)
            {
                long long res1 = dp[i][k];
                long long res2 = dp[i+k][len-k];
                dp[i][len] = max(dp[i][len], 1LL * (res1 + res2)/2);
            }
            ///cout << i << " " << len << " - > " << dp[i][len] << endl;
        }
    }
    cout << dp[1][n] << endl;
}
int main()
{
    speed();
    solve();
    return 0;
}

Compilation message (stderr)

mean.cpp: In function 'void solve()':
mean.cpp:24:17: warning: unused variable 'j' [-Wunused-variable]
   24 |             int j = i + len - 1;
      |                 ^

• Subtask 1: 30 / 30
• Subtask 2: 70 / 70