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Overview
Comment:day 5, part 1
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SHA3-256: 01755d413562cf8ed787359081fcc9960c044987f2a82d2676a4cd8749fe0ff6
User & Date: nnz on 2025-12-05 12:16:14.784
Other Links: manifest | tags
Context
2025-12-05
20:55
incomplete attempt at day 5, part 2 check-in: 48d82159c3 user: nnz tags: trunk
12:16
day 5, part 1 check-in: 01755d4135 user: nnz tags: trunk
2025-12-04
21:50
reworked a few comments check-in: 12cb9a19a0 user: nnz tags: trunk
Changes
Unified Diff Ignore Whitespace Patch
Modified aoc2025.c from [6a6a951f89] to [96f9068e94].
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#if 0
/* === aocYYYYDD =======================================================
===================================================================== */
void aocYYYYDD(char *data, size_t len) {
    (void)len; // unused argument
}

#endif










































/* === aoc202504 =======================================================
===================================================================== */
static unsigned evolve(struct RectangularMap *rm, unsigned src) {
    unsigned changes = 0;
    unsigned dst = 1 - src;
    for (int row = 0; row < rm->rows; row++) {








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#if 0
/* === aocYYYYDD =======================================================
===================================================================== */
void aocYYYYDD(char *data, size_t len) {
    (void)len; // unused argument
}

#endif

/* === aoc202505 =======================================================
===================================================================== */
struct Range {
    long long unsigned lo, hi;
};

void aoc202505(char *data, size_t len) {
    (void)len; // unused argument
    struct Range r[200] = {0};
    size_t nr = 0;
    char *err;
    for (;;) {
        char *minus = strchr(data, '-');
        if (!minus) break;
        *minus = 0;
        r[nr].lo = strtoull(data, &err, 10);
        *minus++ = '-';
        char *enter = strchr(minus, '\n');
        *enter = 0;
        r[nr++].hi = strtoull(minus, &err, 10);
        *enter++ = '\n';
        data = enter;
    }
    unsigned fresh = 0;
    for (;;) {
        long long unsigned item = strtoull(data, &err, 10);
        if (err[0] != '\n') break;
        if (item == 0) break;
        data = err + 1;
        for (size_t k = 0; k < nr; k++) {
            if ((r[k].lo <= item) && (item <= r[k].hi)) {
                fresh++;
                break;
            }
        }
    }
    printf("There are %u fresh items.\n", fresh);

    // pause for brain storming pause
}

/* === aoc202504 =======================================================
===================================================================== */
static unsigned evolve(struct RectangularMap *rm, unsigned src) {
    unsigned changes = 0;
    unsigned dst = 1 - src;
    for (int row = 0; row < rm->rows; row++) {
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Modified aocdailies.c from [d8f37a577d] to [7faacf4978]. 
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#include <stddef.h>
#include "aocdailies.h"

aocfunc *aocselect(unsigned y, unsigned d) {
    aocfunc *p;
    switch (y * 100 + d) {
        default: p = NULL; break;


        case 202504: p = aoc202504; break;
        case 202503: p = aoc202503; break;
        case 202502: p = aoc202502; break;
        case 202501: p = aoc202501; break;

        //   YYYYdd ==>  aocYYYYdd
        case 202422: p = aoc202422; break;









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#include <stddef.h>
#include "aocdailies.h"

aocfunc *aocselect(unsigned y, unsigned d) {
    aocfunc *p;
    switch (y * 100 + d) {
        default: p = NULL; break;

        case 202505: p = aoc202505; break;
        case 202504: p = aoc202504; break;
        case 202503: p = aoc202503; break;
        case 202502: p = aoc202502; break;
        case 202501: p = aoc202501; break;

        //   YYYYdd ==>  aocYYYYdd
        case 202422: p = aoc202422; break;
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Modified aocdailies.h from [39dda2d12a] to [ede2fa7e92]. 
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#ifndef AOCDAILIES_H_INCLUDED
#define AOCDAILIES_H_INCLUDED

#include <stddef.h>

typedef void aocfunc(char *, size_t);
aocfunc *aocselect(unsigned, unsigned);


aocfunc aoc202504;
aocfunc aoc202503;
aocfunc aoc202502;
aocfunc aoc202501;

aocfunc aoc202422;
aocfunc aoc202417;









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#ifndef AOCDAILIES_H_INCLUDED
#define AOCDAILIES_H_INCLUDED

#include <stddef.h>

typedef void aocfunc(char *, size_t);
aocfunc *aocselect(unsigned, unsigned);

aocfunc aoc202505;
aocfunc aoc202504;
aocfunc aoc202503;
aocfunc aoc202502;
aocfunc aoc202501;

aocfunc aoc202422;
aocfunc aoc202417;
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