Submission #18145

#	Time	Username	Problem	Language	Result	Execution time	Memory
18145		tlwpdus	On grid (kriii2_O)	C++98	4 / 4	81 ms	118580 KiB

O

#include<stdio.h>
#include<stdlib.h>
#include<time.h>
#include<algorithm>

using namespace std;

int r, c;
int map[310][310];
int dyn[310][310];
int psum[310][310];
int E[310][310][310];

void process() {
	int i, j, k;
	for (i=1;i<=r;i++) for (j=1;j<=c;j++) psum[i][j] = psum[i-1][j]+psum[i][j-1]-psum[i-1][j-1]+map[i][j];
	for (i=0;i<=r;i++) for (j=0;j<=c;j++) for (k=0;k<=r;k++) E[i][j][k] = -1000000000;
	for (i=1;i<=r;i++) for (j=1;j<=c;j++) {
		if (j!=1) for (k=1;k<i;k++) E[i][j][k] = max(E[i][j-1][k],dyn[k][j-1]+psum[k][j-1]-psum[i][j-1]);
		dyn[i][j] = psum[i][j];
		if (i!=1&&j!=1) for (k=1;k<i;k++) dyn[i][j] = max(dyn[i][j],E[i][j][k]+psum[i][j]-psum[k][j]);
	}
	printf("%d\n",dyn[r][c]);
}

void input() {
	int i, j;
	scanf("%d %d",&r,&c);
	for (i=1;i<=r;i++) for (j=1;j<=c;j++) scanf("%d",&map[i][j]);
}

int main() {
	input();
	process();
	return 0;
}

• Subtask 1: 1 / 1
• Subtask 2: 3 / 3