#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
#include "debug.h"
#else
#define debug(...) 42
#endif
int main() {
ios::sync_with_stdio(false); cin.tie(nullptr);
int N; cin >> N;
vector<long long> A(N), B(N);
for (int i = 0; i < N; ++i) {
cin >> A[i] >> B[i];
}
if (*max_element(A.begin(), A.end()) == 0) {
cout << (*max_element(B.begin(), B.end()) == 0 ? "Yes" : "No");
exit(0);
}
bool flg = 1;
while (flg) {
flg = 0;
for (int i = 0; i < N; ++i) {
if (A[i] > max(B[i], 1LL)) {
long long cnt = max(1LL, (A[i] - B[i]) / 2);
A[i] -= cnt * 2;
A[(i + 1) % N] += cnt;
flg = 1;
}
}
}
bool res = 1;
for (int i = 0; i < N; ++i) {
res &= A[i] == B[i];
}
cout << (res ? "Yes" : "No");
return 0;
}
