#include<bits/stdc++.h>
// #define int long long
// #pragma GCC optimize(3,"Ofast","inline")
#define debug(...) fprintf(stderr,__VA_ARGS__)
#define ll long long
#define bint __int128
#define ull unsigned long long
#define uint unsigned int
#define ld double
#define PII pair<int,int>
#define chkmax(a,b) a=max(a,b)
#define chkmin(a,b) a=min(a,b)
#define rep(k,l,r) for(int k=l;k<=r;++k)
#define per(k,r,l) for(int k=r;k>=l;--k)
#define cl(f,x) memset(f,x,sizeof(f))
#define pcnt(x) __builtin_popcount(x)
#define lg(x) (31-__builtin_clz(x))
using namespace std;
void file_IO() {
    freopen("test.in","r",stdin);
    freopen("test.out","w",stdout);
}
bool M1;
const int INF=0x3f3f3f3f;
const ll INFLL=0x3f3f3f3f3f3f3f3f;
const ld eps=1e-9;
template<int p>
struct mint {
	int x;
	mint() {
		x=0;
	}
	mint(int _x) {
		if(_x<0)
			_x+=p;
		x=_x;
	}
	friend mint operator + (mint a,mint b) {
		return a.x+b.x>=p? a.x+b.x-p:a.x+b.x;
	}
	friend mint operator - (mint a,mint b)  {
		return a.x<b.x? a.x-b.x+p:a.x-b.x;
	}
	friend mint operator * (mint a,mint b) {
		return 1ll*a.x*b.x%p;
	}
	friend mint operator ^ (mint a,ll b) {
		mint res=1,base=a;
		while(b) {
			if(b&1)
				res*=base;
			base*=base; b>>=1;
		}
		return res;
	}
	friend mint operator ~ (mint a) {
		return a^(p-2);
	}
	friend mint operator / (mint a,mint b) {
		return a*(~b);
	}
	friend mint & operator += (mint& a,mint b) {
		return a=a+b;
	}
	friend mint & operator -= (mint& a,mint b) {
		return a=a-b;
	}
	friend mint & operator *= (mint& a,mint b) {
		return a=a*b;
	}
	friend mint & operator /= (mint& a,mint b) {
		return a=a/b;
	}
	friend mint operator ++ (mint& a) {
		return a+=1;
	}
	friend mint operator -- (mint& a) {
		return a-=1;
	}
};
const int MOD=998244353;
#define mint mint<MOD>
const int N=4e2+5,M=8e2+5,K=1.2e3+5,D=400;
mint f[N][M][2][2];
int a[N][M],b[N];
void solve() {
    int n;
    scanf("%d",&n);
    rep(i,1,n) {
        scanf("%d",&b[i]);
        rep(j,1,b[i])
            scanf("%d",&a[i][j]);
    }
	mint res=0;
    rep(v,-n,800) {
		rep(i,0,n) {
			rep(j,0,800) {
				rep(p1,0,1) {
					rep(p2,0,1)
						f[i][j][p1][p2]=0;
				}
			}
		}
		f[0][0][0][0]=1;
		rep(i,1,n) {
			rep(j,1,b[i]) {
				if(a[i][j]-i<v)
					continue;
				rep(k,0,a[i][j]) {
					rep(p1,0,1) {
						rep(p2,0,1)
							f[i][a[i][j]][p1|(a[i][j]-i==v)][p2|(a[i][j]-i>=v+n)]+=f[i-1][k][p1][p2];
					}
				}
			}
		}
		rep(i,0,800)
			res+=mint(-v-n+1)*f[n][i][1][1];
    }
    rep(v,-n,800) {
		rep(i,0,n) {
			rep(j,0,800) {
				rep(p1,0,1) {
					rep(p2,0,1)
						f[i][j][p1][p2]=0;
				}
			}
		}
		f[0][0][0][0]=1;
		rep(i,1,n) {
			rep(j,1,b[i]) {
				if(a[i][j]-i>v)
					continue;
				rep(k,0,a[i][j]) {
					rep(p1,0,1) {
						rep(p2,0,1)
							f[i][a[i][j]][p1|(a[i][j]-i==v)][p2|(a[i][j]-i<=v-n)]+=f[i-1][k][p1][p2];
					}
				}
			}
		}
		rep(i,0,800)
			res+=mint(v)*f[n][i][1][1];
    }
	printf("%d\n",res.x);
}
bool M2;
// g++ QOJ8820.cpp -std=c++14 -Wall -O2 -o QOJ8820
signed main() {
    // file_IO();
    int testcase=1;
    // scanf("%d",&testcase);
    while(testcase--)
        solve();
    debug("used time = %dms\n",(signed)(1000*clock()/CLOCKS_PER_SEC));
    debug("used memory = %dMB\n",(signed)((&M1-&M2)/1024/1024));
    return 0;
}