add day 24 part 2

This commit is contained in:
2024-12-24 18:46:02 +01:00
parent 71f86d88ac
commit 7fd80bb5d4
4 changed files with 456 additions and 0 deletions

69
2024/24/Makefile Normal file
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# **************************************************************************** #
# #
# ::: :::::::: #
# Makefile :+: :+: :+: #
# +:+ +:+ +:+ #
# By: tomoron <tomoron@student.42.fr> +#+ +:+ +#+ #
# +#+#+#+#+#+ +#+ #
# Created: 2024/07/17 15:48:36 by tomoron #+# #+# #
# Updated: 2024/10/29 20:43:12 by tomoron ### ########.fr #
# #
# **************************************************************************** #
SRCS = main.c\
part1.c\
part2.c
OBJS = $(SRCS:.c=.o)
FLAGS = -Wextra -Werror -Wall -g
LIB = libft/libft.a
all: $(LIB) a.out test
cp test cur_input
./a.out
f: $(LIB) a.out input
cp input cur_input
./a.out
test:
touch test
input:
touch input
cp:
cp part1.c part2.c
sed -i 's/resolve_part1/resolve_part2/g' part2.c
$(LIB): libft
make -C libft
libft:
cp -r ~/Desktop/aoc/libft .
main.c:
cp ~/Desktop/aoc/main.c .
part1.c:
cp ~/Desktop/aoc/part1.c .
part2.c:
cp ~/Desktop/aoc/part2.c .
a.out: main.c $(OBJS) $(LIB)
clang $(FLAGS) $(OBJS) $(LIB)
clean:
rm -rf $(OBJS)
rm -rf libft
fclean: clean
rm -rf a.out
.c.o:
clang $(FLAGS) -c $< -o $@
.PHONY: t all clean fclean cp

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2024/24/main.c Normal file
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#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include "libft/libft.h"
long int resolve_part1(char *input, char **split);
long int resolve_part2(char *input, char **split);
char *get_input(char *file)
{
int fd;
int rd_len;
char buffer[1000];
int len;
char *res;
fd = open(file, O_RDONLY);
len = 0;
if(fd < 0)
return(0);
rd_len = -1;
while(rd_len)
{
rd_len = read(fd, buffer, 1000);
len+= rd_len;
}
close(fd);
res = malloc(len + 1);
if(!res)
return(0);
fd = open(file, O_RDONLY);
if(fd < 0)
return(0);
rd_len = read(fd,res, len);
res[len] = 0;
close(fd);
return(res);
}
int main(void)
{
char *input;
char *input_cpy;
char **split;
input = get_input("cur_input");
input_cpy = ft_strdup(input);
if(!input || !input_cpy)
{
fprintf(stderr, "file read error\n");
return(1);
}
split = ft_split(input, '\n');
if(!split)
return(1);
printf("result part 1: %ld\n", resolve_part1(input, split));
ft_free_str_arr(split);
split = ft_split(input_cpy, '\n');
if(!split)
return(1);
printf("result part 2: %ld\n", resolve_part2(input, split));
ft_free_str_arr(split);
free(input);
free(input_cpy);
return(0);
}

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2024/24/part2.c Normal file
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* part2.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: tomoron <tomoron@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2024/07/17 23:03:36 by tomoron #+# #+# */
/* Updated: 2024/12/24 18:44:00 by tomoron ### ########.fr */
/* */
/* ************************************************************************** */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include "libft/libft.h"
typedef struct s_op
{
char name1[4];
char name2[4];
char op;
} t_op;
typedef struct s_vars
{
char name[4];
t_op *op;
unsigned nb:1;
struct s_vars *next;
} t_vars;
static void add_var(t_vars **vars, char *line, t_op *op)
{
t_vars *new;
new = malloc(sizeof(t_vars));
memcpy(new->name, line, 3);
new->name[3] = 0;
new->nb = 0;
if(!op)
{
while(*line != ':' && *line)
line++;
while(!ft_isdigit(*line) && *line)
line++;
new->nb = ft_atoi(line);
}
new->op = op;
new->next = *vars;
*vars = new;
}
static void get_res(char *res, char *line)
{
while(*line != '>' && *line)
line++;
line += 2;
memcpy(res, line, 3);
res[3] = 0;
}
static void handle_line(t_vars **vars, char *line)
{
t_op *new_op;
char val[4];
new_op = malloc(sizeof(t_op));
new_op->op = 0;
memcpy(new_op->name1, line, 3);
new_op->name1[3] = 0;
while(*line != ' ' && *line)
line++;
while(*line == ' ')
line++;
if(*line == 'O')
new_op->op = 1;
if(*line == 'A')
new_op->op = 2;
if(*line == 'X')
new_op->op = 3;
while(*line != ' ' && *line)
line++;
while(*line == ' ')
line++;
memcpy(new_op->name2, line, 3);
new_op->name2[3] = 0;
get_res(val, line);
add_var(vars, val, new_op);
}
static t_vars *get_var(t_vars *vars, char *name)
{
while(vars)
{
if(!ft_strcmp(vars->name, name))
return(vars);
vars = vars->next;
}
return(0);
}
static int get_value(t_vars *all, t_vars *var)
{
if(!var)
return(0);
if(!var->op)
return(var->nb);
if(var->op->op == 1)
return(get_value(all, get_var(all, var->op->name1)) | get_value(all, get_var(all, var->op->name2)));
if(var->op->op == 2)
return(get_value(all, get_var(all, var->op->name1)) & get_value(all, get_var(all, var->op->name2)));
if(var->op->op == 3)
return(get_value(all, get_var(all, var->op->name1)) ^ get_value(all, get_var(all, var->op->name2)));
return(0);
}
int is_input(char *name)
{
return((*name == 'x' || *name == 'y') && ft_isdigit(name[1]) && ft_isdigit(name[2]));
}
int is_output(char *name)
{
return(*name == 'z' && ft_isdigit(name[1]) && ft_isdigit(name[2]));
}
int is_first(t_vars *var)
{
int nb;
if(is_input(var->op->name1) && is_input(var->op->name2))
{
nb = ft_atoi(var->op->name1 + 1);
if(nb == 0)
return(1);
}
return(0);
}
int is_valid_carry(t_vars *all, t_vars *cur)
{
while(all)
{
if(all->op && (!ft_strcmp(cur->op->name1, all->name) || !ft_strcmp(cur->op->name2, all->name)))
if(all->op->op == 2 && is_input(all->op->name1) && ft_atoi(all->op->name1 + 1) != 0)
{
printf("%s\n", all->name);
return(0);
}
all = all->next;
}
return(1);
}
int check_before_xor(t_vars *all, t_vars *cur)
{
while(all)
{
if(all->op && (!ft_strcmp(cur->name, all->op->name1) || !ft_strcmp(cur->name, all->op->name2)))
if(all->op->op == 1)
{
printf("%s\n", cur->name);
return(0);
}
all = all->next;
}
return(1);
}
void get_wrong(t_vars *vars)
{
t_vars *tmp;
t_vars *start;
int max_out;
tmp = vars;
start = vars;
max_out = 0;
while(tmp)
{
if(is_output(tmp->name) && ft_atoi(tmp->name + 1) > max_out)
max_out = ft_atoi(tmp->name + 1);
tmp = tmp->next;
}
while(vars)
{
if(vars->op && !is_first(vars))
{
if(vars->op->op == 3 && is_input(vars->op->name1) && is_input(vars->op->name2) && is_output(vars->name))
printf("%s\n", vars->name);
if(vars->op->op == 3 && !is_input(vars->op->name1) && !is_input(vars->op->name2) && !is_output(vars->name))
printf("%s\n", vars->name);
if(vars->op->op == 2 && is_output(vars->name))
printf("%s\n", vars->name);
if(vars->op->op == 1 && is_output(vars->name) && ft_atoi(vars->name + 1) != max_out)
printf("%s\n", vars->name);
if(vars->op->op == 3 && !is_input(vars->op->name1) && !is_input(vars->op->name2) && is_output(vars->name))
is_valid_carry(start, vars);
if(vars->op->op == 3 && is_input(vars->op->name1) && is_input(vars->op->name2) && !is_output(vars->name))
check_before_xor(start, vars);
}
vars = vars->next;
}
}
void show_wrong(t_vars *vars)
{
uint64_t vals[2];
uint64_t expected;
uint64_t value;
int max_bit;
int i;
value = 0;
vals[0] = 0;
vals[1] = 0;
max_bit = 0;
i = 0;
while(vars)
{
if(vars->name[0] == 'z' && ft_isdigit(vars->name[1]) && ft_isdigit(vars->name[2]))
{
if(ft_atoi(vars->name + 1) > max_bit)
max_bit = ft_atoi(vars->name + 1);
if(get_value(vars, vars))
value += (uint64_t)1 << ft_atoi(vars->name + 1);
}
if(vars->name[0] == 'x' && ft_isdigit(vars->name[1]) && ft_isdigit(vars->name[2]))
{
if(get_value(vars, vars))
vals[0] += (uint64_t)1 << ft_atoi(vars->name + 1);
}
if(vars->name[0] == 'y' && ft_isdigit(vars->name[1]) && ft_isdigit(vars->name[2]))
{
if(get_value(vars, vars))
vals[1] += (uint64_t)1 << ft_atoi(vars->name + 1);
}
vars = vars->next;
}
expected = vals[0] + vals[1];
while(i <= max_bit)
{
if((expected & (1 << max_bit)) != (value & (1 << i)))
printf("error on %d\n", i);
i++;
}
}
long int resolve_part2(char *input, char **split)
{
(void)input;
t_vars *vars;
vars = 0;
while((*split)[3] == ':')
{
add_var(&vars, *split, 0);
split++;
}
while(*split)
{
handle_line(&vars, *split);
split++;
}
// show_wrong(vars);
get_wrong(vars);
printf("order it yourself idgaf\n");
return(0);
}

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x00: 1
x01: 0
x02: 1
x03: 1
x04: 0
y00: 1
y01: 1
y02: 1
y03: 1
y04: 1
ntg XOR fgs -> mjb
y02 OR x01 -> tnw
kwq OR kpj -> z05
x00 OR x03 -> fst
tgd XOR rvg -> z01
vdt OR tnw -> bfw
bfw AND frj -> z10
ffh OR nrd -> bqk
y00 AND y03 -> djm
y03 OR y00 -> psh
bqk OR frj -> z08
tnw OR fst -> frj
gnj AND tgd -> z11
bfw XOR mjb -> z00
x03 OR x00 -> vdt
gnj AND wpb -> z02
x04 AND y00 -> kjc
djm OR pbm -> qhw
nrd AND vdt -> hwm
kjc AND fst -> rvg
y04 OR y02 -> fgs
y01 AND x02 -> pbm
ntg OR kjc -> kwq
psh XOR fgs -> tgd
qhw XOR tgd -> z09
pbm OR djm -> kpj
x03 XOR y03 -> ffh
x00 XOR y04 -> ntg
bfw OR bqk -> z06
nrd XOR fgs -> wpb
frj XOR qhw -> z04
bqk OR frj -> z07
y03 OR x01 -> nrd
hwm AND bqk -> z03
tgd XOR rvg -> z12
tnw OR pbm -> gnj