#include "bits/stdc++.h"
using namespace std;
#ifdef duc_debug
#include "bits/debug.h"
#else
#define debug(...)
#endif
void solve() {
int n; cin >> n;
vector<int> a(n), b(n);
int sum = 0;
for (int i = 0; i < n; ++i) {
cin >> a[i] >> b[i];
sum += b[i];
}
if (sum == 0) {
for (int i = 0; i < n; ++i) {
if (a[i]) {
cout << "No";
return;
}
}
cout << "Yes";
return;
}
while (true) {
bool flag = 0;
for (int i = 0; i < n; ++i) {
if (a[i] > b[i]) {
flag = 1;
a[(i + 1) % n] += (a[i] - b[i] + 1) / 2;
a[i] -= (a[i] - b[i] + 1) / 2 * 2;
}
}
if (!flag) break;
}
for (int i = 0; i < n; ++i) {
if (a[i] != b[i]) {
cout << "No";
return;
}
}
cout << "Yes";
}
signed main() {
ios_base::sync_with_stdio(0);
cin.tie(0);
solve();
return 0;
}
