mirror of
https://github.com/Kiritow/OJ-Problems-Source.git
synced 2024-03-22 13:11:29 +08:00
80 lines
1.6 KiB
C++
80 lines
1.6 KiB
C++
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#include <bits/stdc++.h>
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using namespace std;
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#define MAXR 1005
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#define MAXC 1005
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bool vis[MAXR][MAXC];
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char mapx[MAXR][MAXC];
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void dfs(int y,int x)
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{
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if(vis[y][x]||mapx[y][x]==0||mapx[y][x]=='.') return;
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vis[y][x]=true;
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dfs(y-1,x);
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dfs(y+1,x);
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dfs(y,x-1);
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dfs(y,x+1);
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}
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bool checkmap(int R,int C)
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{
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for(int i=1;i<=R;i++)
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{
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for(int j=1;j<=C;j++)
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{
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if(mapx[i][j]=='#')
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{
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if(mapx[i-1][j]=='#')
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{
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if(mapx[i][j-1]=='#')
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{
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if(mapx[i-1][j-1]=='#')
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{
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continue;
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}
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else
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{
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return true;
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}
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}
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}
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else
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{
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if (mapx[i][j - 1] == '#' && mapx[i - 1][j - 1] == '#')
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{
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return true;
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}
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}
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}
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}
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}
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return false;
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}
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int main()
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{
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int R,C;
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scanf("%d %d",&R,&C);
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for(int i=1;i<=R;i++)
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{
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scanf("%s",&mapx[i][1]);
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}
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if(checkmap(R,C))
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{
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printf("Bad placement.\n");
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return 0;
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}
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int cnt=0;
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for(int i=1;i<=R;i++)
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{
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for(int j=1;j<=C;j++)
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{
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if(mapx[i][j]=='#'&&vis[i][j]==false)
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{
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dfs(i,j);
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cnt++;
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}
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}
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}
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printf("There are %d ships.\n",cnt);
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return 0;
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}
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