題目連結:https://ac.nowcoder.com/acm/contest/5675/E

題解：求最大字首平均值

 1 #include<unordered_map>
 2 #include<vector>
 3 #include<iostream>
 4 #include<cstring>
 5 #include<algorithm>
 6 #include<queue>
 7 #include<cmath>
 8 #include<cstring>
 9 
10 using namespace std;
 
11 #define ll long long 
12 const ll N = 105 + 5;
13 
14 inline ll read() {
15     ll x = 0, f = 1;
16     char ch = getchar();
17     while(ch<'0'||ch>'9'){
18         if(ch=='-')
19             f=-1;
20         ch=getchar();
21     }
22     while(ch>='0'&&ch<='9'){
23         x = x * 10
 
 + ch - '0';
24         ch = getchar();
25     }
26     return x * f;
27 }
28 
29 ll a[N];
30 
31 void solve(int n) {
32     int sum = 0, max_high = 0;
33     for (int i = 1; i <= n; i++) {
34         sum += a[i];
35         max_high = max(max_high, (sum+i-1) / i);
36     }
37     cout << max_high << "
 
\n";
38 }
39 
40 int main() {
41     int t =read();
42     while (t--) {
43         int n =read();
44         for (int i = 1; i <= n; i++) {
45             a[i] = read();
46         }
47 
48         solve(n);
49     }
50     return 0;
51 }
52 
53 /* 
54 100
55 8
56 2 5 1 4 4 6 3 2
57 6
58 1 2 7 8 1 1
59 8
60 6 6 1 2 7 8 1 1
61 8
62 4 4 1 2 7 8 1 1
63 8
64 3 3 1 2 7 8 1 1
65  */