#include <bits/stdc++.h>
using namespace std;
using ll = long long;
void solve() {
ll n;
cin >> n;
vector<ll> a(n), b(n);
for (ll i = 0; i < n; i++) {
cin >> a[i] >> b[i];
}
while (1) {
ll mx = -1e18, mi = 1e18;
for (ll i = 0; i < n; i++) mx = max(mx, a[i] - b[i]), mi = min(mi, a[i] - b[i]);
if (mx < 0) {
cout << "No";
return;
}
if (mx == 0 && mi == 0) {
cout << "Yes";
return;
}
bool f = false;
for (ll i = 0; i < n; i++) {
if (a[i] - b[i] == mx) {
if (a[i] == 1) continue;
ll cr = 1;
a[i] -= 2 * cr;
a[(i + 1) % n] += cr;
f = true;
break;
}
}
if (f) break;
}
cout << "No";
}
signed main() {
cin.tie(nullptr);
ios_base::sync_with_stdio(false);
ll t = 1;
//cin >> t;
while (t--) {
solve();
}
return 0;
}
