refactor + start optimization

cpu-opt/main.cpp

@@ -0,0 +1,15 @@
+#include <cstdlib>
+
+using Gen=int;
+using Cos=int;
+
+struct Rels {
+    Gen *gen[2];
+    int *size; // multiplicity * 2
+};
+
+int main(int argc, char *argv[]) {
+
+
+    return EXIT_SUCCESS;
+}