Submission #9694

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
9694	2014-09-28 08:09:15	silas	On grid (kriii2_O)	C++98	1 / 4	1000 ms	3112 KiB

O

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#include <iostream>
#include <vector>
#include <string.h>
#define INF -987654321
using namespace std;
int R, C;
long long int  arr[303][303];
long long int  cache[303][303];
int psum_element(int y, int x, int val) {
  int ret = val;
  if (x - 1 >= 1) {
    ret += arr[y][x-1];
  }
  if (y - 1 >= 1) {
    ret += arr[y-1][x];
  }
  if (x - 1 >= 1 && y - 1>= 1)
    ret -= arr[y-1][x-1];
  return ret;
}
long long int area_sum(int ori_y, int ori_x, int sub_y, int sub_x) {
  long long int ret = 0;
  ret += arr[ori_y][ori_x];
  ret -= arr[ori_y][sub_x];
  ret -= arr[sub_y][ori_x];
  ret += arr[sub_y][sub_x];
  return ret;
 
 
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