1 #include<iostream>
2 #include<cstdio>
3 #include<cstdlib>
4 #include<cstring>
5 #include<string>
6 #include<queue>
7 #include<algorithm>
8 #include<map>
9 #include<iomanip>
10 #include<climits>
11 #include<string.h>
12 #include<cmath>
13 #include<stdlib.h>
14 #include<vector>
15 #include<stack>
16 #include<set>
17 #define INF 1e7
18 #define MAXN 100010
19 #define maxn 1000010
20 #define Mod 1000007
21 #define N 1010
22 using namespace std;
23 typedef long long LL;
24
25 int T;
26 int num[1000100];
27
28 void run()
29 {
30 int len;
31 int sum = 0, st,beg = 1,en, flag = -1111111;
32 scanf("%d",&len);
33 for (int i = 1; i <= len; ++i)
34 scanf("%d", &num[i]);
35 for (int i = 1; i <= len; ++i) {
36 sum += num[i];
37 if (sum > flag) {
38 en = i;
39 st = beg;
40 flag = sum;
41 }
42 if (sum < 0) {
43 beg = i + 1;
44 sum = 0;
45 }
46 }
47 cout << flag << endl;
48 }
49
50 int main()
51 {
52 scanf("%d",&T);
53 while (T--)
54 run();
55 //system("pause");
56 return 0;
57 }
