#include #include #include #include #include #include #include #include #include #include #include typedef long long int lint; using namespace std; int main() { lint n; scanf("%lld",&n); for(lint tt = 0; tt < n; tt++) { lint k; scanf("%lld",&k); vector r(k),c(k); for (int i=0; i> r[i]; } for (int i=0; i> c[i]; } lint mx = 0, mn = 0; for (int i=0; i