POJ 1195

#include<iostream>#include<cstring>#include<string>#include<cstdio>using namespace std;template<class ValueType,int xMaxSize,int yMaxSize>class TreeArrayTwo{ public: TreeArrayTwo():xSize(xMaxSize),ySize(xMaxSize){memset(ta,0,sizeof(ta));} int low(int n){return n&(-n);} void clear() { memset(ta,0,sizeof(ta)); } void add(int x,int y,ValueType v){for(int i=x;i<=xSize;i+=low(i))for(int j=y;j<=ySize;j+=low(j))ta[i][j]+=v;} ValueType sum(int x,int y){ValueType v=0;for(int i=x;i>0;i-=low(i))for(int j=y;j>0;j-=low(j))v+=ta[i][j];return v;} public: ValueType ta[xMaxSize][yMaxSize]; int xSize,ySize;};TreeArrayTwo<int,1025,1025> tr;void show(){for(int i=1;i<=tr.xSize;i++){for(int j=1;j<=tr.ySize;j++)cout<<tr.ta[i][j]<<" ";cout<<endl;}}int main(){ // freopen("1.txt","r",stdin); int n; int x,y,w,h,v,x2,y2; while(scanf("%d",&n)!=EOF&&n!=3){ if(n==0){ // cin>>tr.xSize; scanf("%d",&tr.xSize); tr.ySize=tr.xSize; tr.clear(); } if(n==1){ //cin>>x>>y>>v; scanf("%d%d%d",&x,&y,&v); tr.add(x+1,y+1,v); } if(n==2){scanf("%d%d%d%d",&x,&y,&x2,&y2);//cin>>x>>y>>x2>>y2;printf("%d/n",tr.sum(x2+1,y2+1)+tr.sum(x,y)-tr.sum(x2+1,y)-tr.sum(x,y2+1)); } } }