#include <bits/stdc++.h>
#define ll long long
#define ld long double
#define sp ' '
#define en '\n'
#define smin(a, b) a = min(a, b)
#define smax(a, b) a = max(a, b)
using namespace std;
const int N = 1e6 + 2;
const int inf = 1e9;
int main() {
ios::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
int n; cin >> n;
vector<int> a(n), b(n);
for (int i = 0; i < n; i++) cin >> a[i] >> b[i];
while (1) {
int ok = 1;
for (int i = 0; i < n; i++) {
if (a[i] > b[i]) {
int c = (a[i] - b[i] + 1) / 2;
a[(i + 1) % n] += c;
a[i] -= 2 * c;
}
}
if (ok) break;
}
int ok = 1;
for (int i = 0; i < n; i++) if (a[i] != b[i]) ok = 0;
if (ok == 1) cout << "Yes" << en;
else cout << "No" << en;
return 0;
}
