CDZSC_2015寒假新人（2）——数学 - G

 1 #include <cstdio>
 2 #include <cstring>
 3 #include <algorithm>
 4 #define LL long long
 5 
 6 const int MAX = 1000024;
 7 int arr[MAX];
 8 
 9 int main()
10 {
11 #ifdef CDZSC_OFFLINE
12     freopen("in.txt", "r", stdin);
13     freopen("out.txt", "w", stdout);
14 #endif
15     int n, t;
16     scanf("%d", &t);
17     while(t--)
18     {
19         scanf("%d", &n);
20         LL sum = 0;
21         for(int i = 0; i < n; i++)
22         {
23             scanf("%d", &arr[i]);
24             sum += arr[i];
25         }
26         std::sort(arr, arr + n);
27         sum -= arr[n - 1];
28         printf("%s\n", (sum >= (arr[n - 1] - 1)) ? "Yes" : "No");
29     }
30     return 0;
31 }