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Submission #5694

# Submission time Handle Problem Language Result Execution time Memory
5694 2014-05-13T10:45:15 Z cki86201 Orchard (NOI14_orchard) C++
25 / 25
 588 ms 9056 KB 
#include<stdio.h>
#include<algorithm>
#include<vector>
using namespace std;

vector<vector <int> > p;
int n, m, ans = ~0u>>1;

inline int get(int x1,int y1,int x2,int y2){return p[x2][y2] - p[x2][y1-1] - p[x1-1][y2] + p[x1-1][y1-1];}

int main()
{
	scanf("%d%d",&n,&m);
	p.resize(n+1);p[0].resize(m+1);
	int i, j;
	for(i=1;i<=n;i++){
		p[i].resize(m+1);
		for(j=1;j<=m;j++)scanf("%d",&p[i][j]);
	}
	for(i=1;i<=n;i++)for(j=1;j<=m;j++)p[i][j] += p[i][j-1] + p[i-1][j] - p[i-1][j-1];
	for(i=1;i<=n;i++){
		for(j=i;j<=n;j++){
			int now = 0;
			for(int k=1;k<=m;k++){
				ans = std::min(ans, (j-i+1) * (k-now) - 2 * get(i, now+1, j, k) + p[n][m]);
				if(get(i, now+1, j, k)*2 < (j-i+1) * (k-now))now = k;
			}
		}
	}
	printf("%d",ans);
	return 0;
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 1240 KB Output is correct
2 Correct 0 ms 1240 KB Output is correct
3 Correct 0 ms 1240 KB Output is correct
4 Correct 0 ms 1240 KB Output is correct

Subtask #2
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 1240 KB Output is correct
2 Correct 0 ms 1240 KB Output is correct
3 Correct 0 ms 1240 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 120 ms 9056 KB Output is correct
2 Correct 128 ms 9056 KB Output is correct
3 Correct 128 ms 9056 KB Output is correct

Subtask #4
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 2416 KB Output is correct
2 Correct 24 ms 2416 KB Output is correct
3 Correct 24 ms 2416 KB Output is correct

Subtask #5
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 1240 KB Output is correct
2 Correct 16 ms 1240 KB Output is correct
3 Correct 16 ms 1240 KB Output is correct

Subtask #6
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 580 ms 4116 KB Output is correct
2 Correct 588 ms 4116 KB Output is correct
3 Correct 584 ms 4116 KB Output is correct