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kruskal.c
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kruskal.c
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uint64_t V = 10;
uint64_t* parent;
uint64_t find(uint64_t i) {
while (*(parent + i) != i)
i = *(parent + i);
return i;
}
void union1(uint64_t i, uint64_t j) {
uint64_t a;
uint64_t b;
a = find(i);
b = find(j);
*(parent + a) = b;
}
uint64_t kruskalMST(uint64_t* cost) {
uint64_t mincost;
uint64_t i;
uint64_t edge_count;
uint64_t min;
uint64_t a;
uint64_t b;
uint64_t j;
mincost = 0;
i = 0;
while (i < V) {
*(parent + i) = i;
i = i + 1;
}
edge_count = 0;
while (edge_count < V - 1) {
min = -1;
a = -1;
b = -1;
i = 0;
while (i < V) {
j = 0;
while (j < V) {
if (find(i) != find(j)) {
if (*((uint64_t*) *(cost + i) + j) < min) {
min = *((uint64_t*) *(cost + i) + j);
a = i;
b = j;
}
}
j = j + 1;
}
i = i + 1;
}
union1(a, b);
mincost = mincost + min;
edge_count = edge_count + 1;
}
return mincost;
}
uint64_t main() {
uint64_t* graph;
uint64_t i;
uint64_t out;
parent = malloc(8 * V);
graph = malloc(8 * V);
i = 0;
while(i < V) {
*(graph + i) = (uint64_t) malloc(8 * V);
i = i + 1;
}
*((uint64_t*) *(graph + 0) + 0) = -1;
*((uint64_t*) *(graph + 0) + 1) = 4;
*((uint64_t*) *(graph + 0) + 2) = -1;
*((uint64_t*) *(graph + 0) + 3) = -1;
*((uint64_t*) *(graph + 0) + 4) = -1;
*((uint64_t*) *(graph + 0) + 5) = -1;
*((uint64_t*) *(graph + 0) + 6) = -1;
*((uint64_t*) *(graph + 0) + 7) = 8;
*((uint64_t*) *(graph + 0) + 8) = -1;
*((uint64_t*) *(graph + 1) + 0) = 4;
*((uint64_t*) *(graph + 1) + 1) = -1;
*((uint64_t*) *(graph + 1) + 2) = 8;
*((uint64_t*) *(graph + 1) + 3) = -1;
*((uint64_t*) *(graph + 1) + 4) = -1;
*((uint64_t*) *(graph + 1) + 5) = -1;
*((uint64_t*) *(graph + 1) + 6) = -1;
*((uint64_t*) *(graph + 1) + 7) = 11;
*((uint64_t*) *(graph + 1) + 8) = -1;
*((uint64_t*) *(graph + 2) + 0) = -1;
*((uint64_t*) *(graph + 2) + 1) = 8;
*((uint64_t*) *(graph + 2) + 2) = -1;
*((uint64_t*) *(graph + 2) + 3) = 7;
*((uint64_t*) *(graph + 2) + 4) = -1;
*((uint64_t*) *(graph + 2) + 5) = 4;
*((uint64_t*) *(graph + 2) + 6) = -1;
*((uint64_t*) *(graph + 2) + 7) = -1;
*((uint64_t*) *(graph + 2) + 8) = 2;
*((uint64_t*) *(graph + 3) + 0) = -1;
*((uint64_t*) *(graph + 3) + 1) = -1;
*((uint64_t*) *(graph + 3) + 2) = 7;
*((uint64_t*) *(graph + 3) + 3) = -1;
*((uint64_t*) *(graph + 3) + 4) = 9;
*((uint64_t*) *(graph + 3) + 5) = 14;
*((uint64_t*) *(graph + 3) + 6) = -1;
*((uint64_t*) *(graph + 3) + 7) = -1;
*((uint64_t*) *(graph + 3) + 8) = -1;
*((uint64_t*) *(graph + 4) + 0) = -1;
*((uint64_t*) *(graph + 4) + 1) = -1;
*((uint64_t*) *(graph + 4) + 2) = -1;
*((uint64_t*) *(graph + 4) + 3) = 9;
*((uint64_t*) *(graph + 4) + 4) = -1;
*((uint64_t*) *(graph + 4) + 5) = 10;
*((uint64_t*) *(graph + 4) + 6) = -1;
*((uint64_t*) *(graph + 4) + 7) = -1;
*((uint64_t*) *(graph + 4) + 8) = -1;
*((uint64_t*) *(graph + 5) + 0) = -1;
*((uint64_t*) *(graph + 5) + 1) = -1;
*((uint64_t*) *(graph + 5) + 2) = 4;
*((uint64_t*) *(graph + 5) + 3) = 14;
*((uint64_t*) *(graph + 5) + 4) = 10;
*((uint64_t*) *(graph + 5) + 5) = -1;
*((uint64_t*) *(graph + 5) + 6) = 2;
*((uint64_t*) *(graph + 5) + 7) = -1;
*((uint64_t*) *(graph + 5) + 8) = -1;
*((uint64_t*) *(graph + 6) + 0) = -1;
*((uint64_t*) *(graph + 6) + 1) = -1;
*((uint64_t*) *(graph + 6) + 2) = -1;
*((uint64_t*) *(graph + 6) + 3) = -1;
*((uint64_t*) *(graph + 6) + 4) = -1;
*((uint64_t*) *(graph + 6) + 5) = 2;
*((uint64_t*) *(graph + 6) + 6) = -1;
*((uint64_t*) *(graph + 6) + 7) = 1;
*((uint64_t*) *(graph + 6) + 8) = 6;
*((uint64_t*) *(graph + 7) + 0) = 8;
*((uint64_t*) *(graph + 7) + 1) = 11;
*((uint64_t*) *(graph + 7) + 2) = -1;
*((uint64_t*) *(graph + 7) + 3) = -1;
*((uint64_t*) *(graph + 7) + 4) = -1;
*((uint64_t*) *(graph + 7) + 5) = -1;
*((uint64_t*) *(graph + 7) + 6) = 1;
*((uint64_t*) *(graph + 7) + 7) = -1;
*((uint64_t*) *(graph + 7) + 8) = 7;
*((uint64_t*) *(graph + 8) + 0) = -1;
*((uint64_t*) *(graph + 8) + 1) = -1;
*((uint64_t*) *(graph + 8) + 2) = 2;
*((uint64_t*) *(graph + 8) + 3) = -1;
*((uint64_t*) *(graph + 8) + 4) = -1;
*((uint64_t*) *(graph + 8) + 5) = -1;
*((uint64_t*) *(graph + 8) + 6) = 6;
*((uint64_t*) *(graph + 8) + 7) = 7;
*((uint64_t*) *(graph + 8) + 8) = -1;
// added node
*((uint64_t*) *(graph + 0) + 9) = -1;
*((uint64_t*) *(graph + 1) + 9) = -1;
*((uint64_t*) *(graph + 2) + 9) = -1;
*((uint64_t*) *(graph + 3) + 9) = 10;
*((uint64_t*) *(graph + 4) + 9) = 10;
*((uint64_t*) *(graph + 5) + 9) = -1;
*((uint64_t*) *(graph + 6) + 9) = -1;
*((uint64_t*) *(graph + 7) + 9) = -1;
*((uint64_t*) *(graph + 8) + 9) = -1;
//
*((uint64_t*) *(graph + 9) + 0) = -1;
*((uint64_t*) *(graph + 9) + 1) = -1;
*((uint64_t*) *(graph + 9) + 2) = -1;
*((uint64_t*) *(graph + 9) + 3) = 10;
*((uint64_t*) *(graph + 9) + 4) = 10;
*((uint64_t*) *(graph + 9) + 5) = -1;
*((uint64_t*) *(graph + 9) + 6) = -1;
*((uint64_t*) *(graph + 9) + 7) = -1;
*((uint64_t*) *(graph + 9) + 8) = -1;
*((uint64_t*) *(graph + 9) + 9) = -1;
interval((uint64_t*) *(graph + 0) + 1, 1, 50, 1);
interval((uint64_t*) *(graph + 1) + 0, 1, 50, 1);
interval((uint64_t*) *(graph + 1) + 7, 1, 50, 1);
interval((uint64_t*) *(graph + 7) + 1, 1, 50, 1);
interval((uint64_t*) *(graph + 6) + 8, 1, 50, 1);
interval((uint64_t*) *(graph + 8) + 6, 1, 50, 1);
interval((uint64_t*) *(graph + 2) + 5, 1, 50, 1);
interval((uint64_t*) *(graph + 5) + 2, 1, 50, 1);
out = kruskalMST(graph);
return 0;
}