HDU 1003 Max Sum

 1 #include<stdio.h>
 2 int main()
 3 {
 4     int T,t,n,a[100010],i,sum,s,f,c=0,max;
 5     scanf("%d",&T);
 6     while(T--)
 7     {
 8         scanf("%d",&n);
 9         for(i=1;i<=n;i++)
10             scanf("%d",&a[i]);
11         sum=0;
12         max=-99999999;//注意将max赋值为一个较小的赋值 
13         t=1;
14         for(i=1;i<=n;i++){
15             sum += a[i];
16             if(sum > max){
17                 max=sum;
18                 s=t;
19                 f=i;
20             }
21             if(sum < 0){
22                 sum=0;
23                 t=i+1;
24             }
25         }
26         printf("Case %d:\n%d %d %d\n",++c,max,s,f);
27         if(T != 0)
28         printf("\n");
29     }
30     return 0;
31 }