#include <iostream>
#include <set>
using namespace std;
int a[1000000], b[1000000];
int main()
{
int N;
cin >> N;
for(int i = 0; i < N; i++) cin >> a[i] >> b[i];
bool flag;
do {
flag = 0;
for (int i = 0; i < N; i++) {
int remittance = (a[i] - b[i]) / 2;
if (remittance > 0) {
a[i] -= 2 * remittance;
a[(i + 1) % N] += remittance;
flag = 1;
}
}
} while (flag);
bool ok1 = true;
bool ok2 = true;
bool b0 = true;
for (int i = 0; i < N; i++) {
ok1 &= a[i] == b[i];
ok2 &= a[i] == b[i] + 1;
b0 &= b[i] == 0;
}
ok2 &= !b0;
if (ok1 || ok2) {
cout << "Yes\n";
} else {
cout << "No\n";
}
}
