#include <bits/stdc++.h>
#define x first
#define y second
#define pii pair<ll, ll>
typedef long long ll;
const ll MOD = 1000000007LL;
const ll INF = 1e15;
using namespace std;
ll n, a[1000010], b[1000010];
int main() {
cin.tie(0); cout.tie(0);
ios::sync_with_stdio(0);
cin >> n;
for (int i = 1; i <= n; i++) cin >> a[i] >> b[i];
for (int j = 1; j <= 50; j++) {
for (int i = 1; i <= n; i++) {
if (a[i] > b[i]) {
a[i%n+1] += (a[i]-b[i]+1)/2;
a[i] -= ((a[i]-b[i]+1)/2)*2;
}
}
}
for (int i = 1; i <= n; i++) {
if (a[i] != b[i]) {
cout << "No\n";
return 0;
}
}
cout << "Yes\n";
return 0;
}
/*
*/
