#include <bits/stdc++.h>
using namespace std;
const int dirx[] = {-2, -1, 1, 2, 1, -1};
const int diry[] = {0, 1, 1, 0, -1, -1};
inline void debugMode() {}
long long n, m, first[200100], second[200100], z[200100], val[200100];
vector<int> V[200100];
bool in[200100], ies[200100], u = 1;
set<int> S;
map<pair<int, int>, int> M;
void dfs(int first) {
  for (auto it : V[first]) {
    if (val[it] != 2e9) {
      val[it] = val[first] + M[{first, it}];
    } else {
      if (val[first] + M[{first, it}] != val[it]) u = 0;
    }
    dfs(it);
  }
}
int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  cout << "No";
  return 0;
}
