Untitled

#include <iostream>
using namespace std;
int st[1000];
int top;
int dx[] = {1,-1,0,0};
int dy[] = {0,0,1,-1};
void push(int x){
	top++;
	st[top] = x;
}
int pop(){
	int x = st[top];
	top--;
	return x;
}
int main(){
	freopen("input.txt","r",stdin);
	int x,T;
	cin>>T;
	for (x = 0; x < T; x++){
		int N,dem=0,max=0;
		cin>>N;
		int A[25][25],i,j;
		for (i = 0; i < N; i++)
			for (j = 0; j < N; j++)
				cin>>A[i][j];
		for (i = 0; i < N; i++)
			for (j = 0; j < N; j++){
				if (A[i][j] ==1){
					int d = 0;
					dem++;
					top = -1;
					push(i);
					push(j);
					A[i][j] = 0;
					d++;
					while (top>= 1){
						int col = pop();
						int row = pop();
						for (int k = 0; k <4; ++k){
							int x1 = row + dx[k];
							int y1 = col + dy[k];
							if (x1>=0 && x1<N && y1>=0 && y1<N && A[x1][y1] == 1){
								push(x1);
								push(y1);
								A[x1][y1] = 0;
								d++;
							}
						}
					}
					if (max < d) max = d;
				}
			}
		cout<<dem<<" "<<max << endl;
	}
	return 0;
}