第八周算法训练关联矩阵

#include<iostream> 
#include<cstring>
using namespace std;
int main(){
	int b,d,x,y;
	int s[105][1005];
	memset(s,0,sizeof(s));
	cin>>d>>b;
	for(int i=0;i<b;i++){
		cin>>x>>y;
		s[x-1][i]=1;
		s[y-1][i]=-1;
	}
	for(int i=0;i<d;i++){
		for(int j=0;j<b;j++){
			cout<<s[i][j]<<" ";
		}
		cout<<endl;
	}
	return 0;
}