#include <bits/stdc++.h>
using namespace std;
void process(){
int n; cin >> n;
vector <int> A(n), B(n);
for (int i = 0; i < n; ++ i)
cin >> A[i] >> B[i];
for (int loops = 0; loops < 32; ++ loops) {
for (int i = 0; i < n; ++ i){
if (A[i] > B[i]){
int to = (A[i] - B[i]);
if ((to & 1) && to * 2 <= A[i]) to ++;
A[i] -= to * 2;
A[(i + 1) % n] += to;
}
}
}
for (int i = 0; i < n; ++ i) if (A[i] != B[i]){
cout << "No" << "\n";
return;
}
cout << "Yes" << "\n";
}
int main(){
ios_base::sync_with_stdio(0);
cin.tie(0); cout.tie(0);
process();
return 0;
}
