#include <iostream>
#include<vector>
using namespace std;
int main() {
int n, mx = 0; cin >> n;
vector<int> a(n), b(n);
for (int i = 0; i < n; mx = max(mx, b[i]), ++i)
cin >> a[i] >> b[i];
for (int v = 0; v <= mx; ++v) {
int x = v; bool ok = 1, mc = 0;
for (int i = 1; i < n; ++i) {
int sub = a[i] + x - b[i];
if ((sub < 0) || (sub % 2)) { ok = 0; break; }
x = sub / 2, mc |= (sub <= (a[i] + a[i - 1]));
}
if (!(mc || ((v + v) <= (a[0] + a[n - 1])))) continue;
if (ok && ((a[0] + x - v - v) == b[0])) { cout << "Yes"; return 0; }
}
cout << "No";
}
