#include <bits/stdc++.h>
#define int long long
using namespace std;
signed main(void) {
ios_base::sync_with_stdio(false);
cin.tie(0);
int N;
cin >> N;
vector<int> A(N), B(N);
for (int i = 0; i < N; ++i) {
cin >> A[i] >> B[i];
}
bool allZero = true;
for (int i = 0; i < N; ++i)
allZero &= !B[i];
if (allZero) {
while (true) {
bool change = false;
for (int i = 0; i < N; ++i) {
if (A[i] > 1) {
int d = A[i] / 2;
A[i] -= 2 * d;
A[(i + 1) % N] -= d;
change = true;
}
}
if (!change)
break;
}
} else {
while (true) {
bool change = false;
for (int i = 0; i < N; ++i)
if (A[i] > B[i]) {
int delta = (A[i] - B[i] + 1) / 2;
A[i] -= 2 * delta;
A[(i + 1) % N] += delta;
change = true;
}
if (!change)
break;
}
}
for (int i = 0; i < N; ++i)
if (A[i] != B[i]) {
cout << "No\n";
return 0;
}
cout << "Yes\n";
}
