// Solution to codechef ZCO13004 (Save Spaceman Spiff).
#include <bits/stdc++.h>
using namespace std;
int main(int argc, char* argv[])
{
ios_base::sync_with_stdio(false);
int n, m, k, i;
cin >> n >> m >> k;
for ( i = 0; i < k; i++ ) {
int y, x, s, f, t;
cin >> y >> x >> s >> f;
t = y+x-2;
if (t >= s && (t - s) % f == 0) {
cout << "NO\n";
return 0;
}
}
cout << "YES\n" << (n+m-2) << '\n';
return 0;
}
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