#include <ctype.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "aocdailies.h"
#include "aocutils.h"

void aoc202405(char *data, size_t len) {
    (void)data; // unused argument
    (void)len; // unused argument
    // assume (by visual inspection) all page numbers `pn` are between 10 and 99
    unsigned pagepair[2500][2], npp = 0;
    char *line = strtok(data, "\n");
    while (strchr(line, '|')) {
        char *err;
        pagepair[npp][0] = strtoul(line, &err, 10);
        err += 1; // skip '|'
        pagepair[npp][1] = strtoul(line, &err, 10);
        npp++;
        line = strtok(NULL, "\n");
    }
    printf("first pagepair: %u and %u\n", pagepair[0][0], pagepair[0][1]);
    printf("last pagepair: %u and %u\n", pagepair[npp - 1][0], pagepair[npp - 1][1]);
    printf("wip/n");
    printf("got %u pairs\n", npp);
    while ((line = strtok(NULL, "\n")) != NULL) {
        // process line
    }
}
static size_t rcmap(unsigned size, unsigned row, unsigned col) {
    return row * (size + 1) + col;
}

static bool masat(char *data, unsigned size, unsigned row, unsigned col, int drow, int dcol) {
    int maxrow = (int)row + 3*drow;