Submission #22715

#	Time	Username	Problem	Language	Result	Execution time	Memory
22715		dried chocochip on Daegu asphalt (#40)	Young Zebra (KRIII5_YZ)	C++11	0 / 7	500 ms	165112 KiB

YZ

#include<bits/stdc++.h>

using namespace std;

int n, m;
char mmap[400][400];
int cc[400][400], c_idx;
bool visited[400][400];
int cc_sz[400*400+2];
int di[4] = {-1, 0, 1, 0};
int dj[4] = {0, 1, 0, -1};

char mmap2[2800][2800];
int cc2[2800][2800], c_idx2;
bool visited2[2800][2800];

void dfs2(int i, int j)
{
	visited2[i][j] = true;
	cc2[i][j] = c_idx2;

	for(int k = 0; k < 4; k++)
	{
		int ni = i+di[k], nj = j+dj[k];
		if(ni < 0 || ni >= 7*n || nj < 0 || nj >= 7*m)	continue;
		if(!visited2[ni][nj] && mmap2[i][j] == mmap2[ni][nj])
			dfs2(ni, nj);
	}
}

void dfs(int i, int j)
{
	visited[i][j] = true;
	cc[i][j] = c_idx;
	cc_sz[c_idx]++;

	for(int k = 0; k < 4; k++)
	{
		int ni = i+di[k], nj = j+dj[k];
		if(ni < 0)	ni += n;
		if(ni >= n)	ni -= n;
		if(nj < 0)	nj += m;
		if(nj >= m)	nj -= m;

		if(!visited[ni][nj] && mmap[i][j] == mmap[ni][nj])
			dfs(ni, nj);
	}
}

int main()
{
	scanf("%d %d", &n, &m);
	for(int i = 0; i < n; i++)
		for(int j = 0; j < m; j++)
			scanf(" %c", &mmap[i][j]);

	for(int i = 0; i < 7*n; i++)
		for(int j = 0; j < 7*m; j++)
			mmap2[i][j] = mmap[i%n][j%m];

	for(int i = 0; i < n; i++)
		for(int j = 0; j < m; j++)
			if(!visited[i][j])
			{
				c_idx++;
				dfs(i, j);
			}

	for(int i = 0; i < 7*n; i++)
		for(int j = 0; j < 7*m; j++)
			if(!visited2[i][j])
			{
				c_idx2++;
				dfs2(i, j);
			}
	

	for(int i = 0; i < n; i++)
	{
		for(int j = 0; j < m; j++)
		{
			bool check = false;
			for(int ddi = 0; ddi < 7; ddi++)
				for(int ddj = 0; ddj < 7; ddj++)
				{
					if(ddi == 3 && ddj == 3)	continue;
					if(cc2[i+n*3][j+m*3] == cc2[i+ddi*n][j+ddj*m])
						check = true;
				}
			if(check)	printf("-1 ");
			else	printf("%d ", cc_sz[cc[i][j]]);
		}
		printf("\n");
	}
	return 0;
}

Compilation message (stderr)

YZ.cpp: In function 'int main()':
YZ.cpp:52:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d", &n, &m);
                        ^
YZ.cpp:55:29: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    scanf(" %c", &mmap[i][j]);
                             ^

• Subtask 1: 0 / 7