#include <bits/stdc++.h>
using namespace std;
constexpr int MAXN = 1000005;
constexpr int MAXINT = 1073741823;
int a[MAXN], b[MAXN];
int main() {
ios::sync_with_stdio(false);
cin.tie(0);
int n, to_move;
bool changed = true, isnt;
cin >> n;
for (int i = 0; i < n; i++)
cin >> a[i] >> b[i];
while (changed) {
changed = false;
for (int i = 0; i < n; i++) {
if (a[i] <= b[i])
continue;
to_move = (b[i] == 0? a[i] / 2 : (a[i] - b[i] + 1) / 2);
a[i] -= 2 * to_move;
a[(i + 1) % n] += to_move;
if (to_move > 0)
changed = true;
}
}
isnt = false;
for (int i = 0; i < n; i++)
if (a[i] != b[i])
isnt = true;
cout << (isnt? "No" : "Yes");
return 0;
}
