Submission #16511

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
16511	2015-08-27T00:22:37 Z	hongjun7	On grid (kriii2_O)	C++	0 / 4	1 ms	2172 KB

O

#include <stdio.h>
#define MN 305
#define max(a, b) ((a)>(b)?(a):(b))
const int oo = 1e9;
int n, m, x, c[MN][MN], d[MN][MN], f[MN][MN];
int main() {
	scanf("%d%d", &n, &m);
	for (int i = 1; i <= n; i++) {
		for (int j = 1; j <= m; j++) {
			scanf("%d", &x);
			c[i][j] = x + c[i - 1][j] + c[i][j - 1] - c[i - 1][j - 1];
		}
	}
	for (int i = 0; i <= n; i++) for (int j = 0; j <= m; j++) f[i][j] = -oo;
	for (int j = 1; j <= m; j++) {
		for (int i = n; i >= 1; i--) {
			d[i][j] = c[i][j];
			for (int k = 0; k < i; k++) d[i][j] = max(d[i][j], f[k][i] + c[i][j] - c[k][j]);
			for (int k = i + 1; k <= n; k++) f[i][k] = max(f[i][k], d[i][j] - c[k][j] + c[i][j]);
		}
	}
	printf("%d", d[n][m]);
}

Subtask #1

0.0 / 1.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	2172 KB	Output is correct
2	Correct	0 ms	2172 KB	Output is correct
3	Correct	0 ms	2172 KB	Output is correct
4	Correct	0 ms	2172 KB	Output is correct
5	Correct	1 ms	2172 KB	Output is correct
6	Correct	0 ms	2172 KB	Output is correct
7	Correct	0 ms	2172 KB	Output is correct
8	Correct	0 ms	2172 KB	Output is correct
9	Correct	0 ms	2172 KB	Output is correct
10	Correct	0 ms	2172 KB	Output is correct
11	Correct	0 ms	2172 KB	Output is correct
12	Incorrect	0 ms	2172 KB	Output isn't correct
13	Halted	0 ms	0 KB	-

Subtask #2

0.0 / 3.0

#	Verdict	Execution time	Memory	Grader output
1	Halted	0 ms	0 KB	-