> #include <stdio.h>
> 
> #define MAX    1025
> #define QURRY  2
> #define ADD    1
> #define INIT   0
> #define END    3
> #define RET    return
> #define INT32  int
> #define INT64  long long
> 
> INT64 sum_t[MAX][MAX];
> 
> INT32 s, ins;
> 
> INT32 lowbit(INT32 t)
> {
> 	RET t & (t ^ (t - 1));
> }
> 
> INT32 plus(INT32 i,INT32 j,INT32 c)
> {
> 	while(i <= s)
> 	{
> 		INT32 tempj = j;
> 		while(tempj <=s)
> 		{
> 			sum_t[i][tempj] += c;
>             tempj += lowbit(tempj);
> 		}
> 		i += lowbit(i);
> 	}
> 	RET 0;
> }
> 
> INT64 get_sum(INT32 i,INT32 j)
> {
> 	INT64 temp = 0;
> 	while(i > 0)
> 	{
> 		INT32 tempj = j;
> 		while(tempj >0)
> 		{
> 			temp += sum_t[i][tempj];
> 			tempj -= lowbit(tempj);
> 		}
> 		i -= lowbit(i);
> 	}
> 	RET temp;
> }
> 
> INT32 main()
> {
> 	//freopen("in.txt","r",stdin);
> 	while(scanf("%d",&ins) == 1)
> 	{
> 		if(ins == INIT)
> 		{
> 			scanf("%d",&s);
> 			for(INT32 i = 1; i <= s; i++)
> 				for(INT32 j = 1; j <= s; j++)
> 					sum_t[i][j] = 0;
> 		}
> 		else if(ins == ADD)
> 		{
> 			INT32 x, y, c;
> 			scanf("%d%d%d",&x,&y,&c);
> 			x++,y++;
> 			plus(x,y,c);
> 		}
> 		else if(ins == QURRY)
> 		{
> 			INT32 l, b, r, t;
> 			INT64 sum = 0;
> 			scanf("%d%d%d%d",&l,&b,&r,&t);
> 			l++,b++,r++,t++;
> 			sum += get_sum(t,r);
> 			if(b-1 > 0) sum -= get_sum(b-1,r);
> 			if(l-1 > 0) sum -= get_sum(t,l-1);
> 			if(b-1 > 0 && l-1 > 0) sum += get_sum(b-1,l-1);
> 			printf("%lld\n",sum);
> 		}
> 		else if(ins == END) break;
> 	}
> 	RET 0;
> }
搞错下标了。。