2020NOIP——T1water

题目链接

代码：

#include<cstdio>
#define Fu(i,a,b) for(register int i=(a);i<=(b);i++)
#define fre(x) freopen(#x".in","r",stdin),freopen(#x".out","w",stdout)
#define LL __int128
LL z[100005],m[100005];
int n,s,d[100005][10],vis[100005];
bool bj=true;
LL gcd(LL a,LL b){
    
    
	LL r=a%b;
	while(r!=0) a=b,b=r,r=a%b;
	return b;
}
void add(LL &a,LL &b,LL a1,LL b1){
    
    
	LL r=gcd(b*b1,a*b1+a1*b);
	a=(a*b1+a1*b)/r,b=b*b1/r;
}
inline void print(__int128 x){
    
    
    if(x<0){
    
    
        putchar('-');
        x=-x;
    }
    if(x>9)
        print(x/10);
    putchar(x%10+'0');
}
int main(){
    
    
//	fre(water);
	scanf("%d%d",&n,&s);
	Fu(i,1,n){
    
    
		scanf("%d",&d[i][0]);
		Fu(j,1,d[i][0]){
    
    
			scanf("%d",&d[i][j]);
			vis[d[i][j]]++;
		}
	}
	Fu(i,1,n){
    
    
		if(vis[i]==0) z[i]=1;
		m[i]=1;
	}
	while(bj){
    
    
		bj=false;
		Fu(i,1,n){
    
    
			if(d[i][0]!=0&&z[i]!=0){
    
    
				Fu(j,1,d[i][0]){
    
    
					add(z[d[i][j]],m[d[i][j]],z[i],m[i]*d[i][0]);
				}
				z[i]=0,m[i]=1;
			}
		}
		Fu(i,1,n)if(d[i][0]!=0&&z[i]!=0){
    
    
			bj=true;
			break;
		}
	}
	Fu(i,1,n) if(d[i][0]==0){
    
    
		print(z[i]);
		printf(" ");
		print(m[i]);
		printf("\n");
	}
	return 0;
}