Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)
Total Submission(s): 63427 Accepted Submission(s): 26755
1 #include <iostream> 2 #include <cstdio> 3 #include <cstring> 4 using namespace std; 5 const int Max=50000+5; 6 int seg[Max<<2],num[Max]; 7 int r,l,L,R,rt,N,p; 8 int a,b,pos; 9 char ch[20]; 10 void PushUP(int rt) 11 { 12 seg[rt]=seg[rt<<1]+seg[rt<<1|1]; 13 return; 14 } 15 void build(int rt,int l,int r) 16 { 17 int mid=(l+r)>>1; 18 if(l==r) 19 { 20 seg[rt]=num[r]; 21 return; 22 } 23 build(rt<<1,l,mid); 24 build(rt<<1|1,mid+1,r); 25 PushUP(rt); 26 return; 27 } 28 void updata(int rt,int l,int r) 29 { 30 if(r==l) 31 { 32 seg[rt]+=p; 33 return; 34 } 35 int mid=(r+l)>>1; 36 if(pos>mid) updata(rt<<1|1,mid+1,r); 37 if(pos<=mid) updata(rt<<1,l,mid); 38 PushUP(rt); 39 return; 40 } 41 int query(int rt,int l,int r) 42 { 43 int mid=(l+r)>>1; 44 int sum=0; 45 if(L<=l&&R>=r) return seg[rt]; 46 if(mid>=L) sum+=query(rt<<1,l,mid); 47 if(mid<R) sum+=query(rt<<1|1,mid+1,r); 48 return sum; 49 } 50 int main() 51 { 52 int T,k,i,j; 53 //freopen("in.txt","r",stdin); 54 cin>>T; 55 k=T; 56 while(T--) 57 { 58 cin>>N; 59 for(i=0;i<N;i++) 60 scanf("%d",&num[i]); 61 build(1,0,N-1); 62 getchar(); 63 printf("Case %d:\n",k-T); 64 while(scanf("%s",ch)&&ch[0]!=‘E‘) 65 { 66 scanf("%d%d",&a,&b); 67 if(ch[0]==‘Q‘) {L=a-1,R=b-1;printf("%d\n",query(1,0,N-1));continue;} 68 if(ch[0]==‘A‘) pos=a-1,p=b; 69 if(ch[0]==‘S‘) pos=a-1,p=-b; 70 updata(1,0,N-1); 71 } 72 } 73 return 0; 74 }
原文:http://www.cnblogs.com/a1225234/p/4976133.html