Submission #217446

#	Time	Username	Problem	Language	Result	Execution time	Memory
217446		dimash241	Mean (info1cup19_mean)	C++17	100 / 100	8 ms	512 KiB

mean

//#pragma GCC target("avx2")
//#pragma GCC optimize("O3")

//# include <x86intrin.h>
# include <bits/stdc++.h>

//# include <ext/pb_ds/assoc_container.hpp>
//# include <ext/pb_ds/tree_policy.hpp>

//using namespace __gnu_pbds;
using namespace std;
 
//template<typename T> using ordered_set = tree <T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;

#define _USE_MATH_DEFINES_
#define ll long long
#define ld long double
#define Accepted 0
#define pb push_back
#define mp make_pair
#define sz(x) (int)(x.size())
#define every(x) x.begin(),x.end()
#define F first
#define S second
#define lb lower_bound
#define ub upper_bound
#define For(i,x,y)  for (ll i = x; i <= y; i ++) 
#define FOr(i,x,y)  for (ll i = x; i >= y; i --)
#define SpeedForce ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0)
// ROAD to...                                                                                                                                                                                                                Red

inline void Input_Output () {
	//freopen(".in", "r", stdin);
   //freopen(".out", "w", stdout);
}

const double eps = 0.000001;
const ld pi = acos(-1);
const int maxn = 1e7 + 9;
const int mod = 1e9 + 7;
const ll MOD = 1e18 + 9;
const ll INF = 1e18 + 123;
const int inf = 2e9 + 11;
const int mxn = 1e6 + 9;
const int N = 6e5 + 123;                                          
const int M = 22;
const int pri = 997;
const int Magic = 2101;

const int dx[] = {-1, 0, 1, 0};
const int dy[] = {0, -1, 0, 1};
 
int n, m, k;
int dp[202][202];
int a[202];
//	mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
//	shuffle(permutation.begin(), permutation.end(), rng);



int main () {
	scanf("%d", &n);
	vector < int > vv;
	for (int i = 1; i <= n; ++i) {
		scanf("%d", a + i);
		dp[i][i] = a[i];
	}


    for (int len = 2; len <= n; ++len) {
    	for (int l = 1, r = len; r <= n; ++l, ++r) {
        	for (int m = l; m < r; ++m) {
        		dp[l][r] = max(dp[l][r], (dp[l][m] + dp[m+1][r]) / 2);
        	}
      	}
    }  
    cout << dp[1][n] << '\n';

	return Accepted;
}

// B...a

Compilation message (stderr)

mean.cpp: In function 'int main()':
mean.cpp:62:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
  ~~~~~^~~~~~~~~~
mean.cpp:65:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", a + i);
   ~~~~~^~~~~~~~~~~~~

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