20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
|
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
|
-
+
|
while (*data) {
for (int k = 0; k < *data - '0'; k++) {
if (ndisk == rdisk) {
// assume it works
rdisk = (13*rdisk)/8;
disk = realloc(disk, rdisk * sizeof *disk);
}
disk[ndisk++] = fileid;
disk[ndisk++] = (fileid * 10) + (*data - '0'); // encode fileid and length
}
fileid++;
data++;
if (*data) {
for (int k = 0; k < *data - '0'; k++) {
if (ndisk == rdisk) {
// assume it works
|
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
|
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
|
-
+
|
int tmp = *--right;
*right = *left;
*left++ = tmp;
}
unsigned long long chksum = 0;
size_t index = 0;
while (disk[index] >= 0) {
chksum += (size_t)disk[index] * index;
chksum += ((size_t)disk[index]/10) * index;
index++;
}
printf("%llu\n", chksum);
free(disk);
// part 2
free(diskcopy);
|