#include <bits/stdc++.h>
using namespace std;
template<typename T>
void out(T x) { cout << x << endl; exit(0); }
#define watch(x) cout << (#x) << " is " << (x) << endl
typedef long long ll;
const ll mod = 1e9+7;
const int maxn = 10;
int n;
vector<ll> a, b;
int main() {
ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
cin>>n;
a.resize(n);
b.resize(n);
for (int i=0; i<n; i++) {
cin>>a[i]>>b[i];
}
bool az = true;
bool bz = true;
for (int i=0; i<n; i++) {
if (a[i]>0) az=false;
if (b[i]>0) bz=false;
}
if (az) {
if (bz) out("Yes");
out("No");
}
while (1) {
bool edit = false;
for (int i=0; i<n; i++) {
if (a[i]>b[i]) {
ll push = (a[i]-b[i]+1)/2;
a[i] -= push*2;
a[(i+1)%n] += push;
edit = true;
}
}
if (!edit) break;
}
if (a == b) out("Yes");
out("No");
return 0;
}
