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-rwxr-xr-x2021/day02/day02bin0 -> 47672 bytes
-rw-r--r--2021/day02/day02.cpp50
-rw-r--r--2021/day02/day02_input.txt1000
-rw-r--r--2021/day02/makefile2
4 files changed, 1052 insertions, 0 deletions
diff --git a/2021/day02/day02 b/2021/day02/day02
new file mode 100755
index 0000000..8755c57
--- /dev/null
+++ b/2021/day02/day02
Binary files differ
diff --git a/2021/day02/day02.cpp b/2021/day02/day02.cpp
new file mode 100644
index 0000000..dccb44a
--- /dev/null
+++ b/2021/day02/day02.cpp
@@ -0,0 +1,50 @@
+#include <iostream>
+
+int main (int argc, char *argv[]) {
+ if (argc != 2) return 1;
+
+ int depth = 0;
+ int forward = 0;
+
+ int aim = 0;
+ int aim_depth = 0;
+
+ FILE *f = fopen(argv[1], "r");
+ char c = fgetc(f);
+ std::string command;
+ while (c != EOF) {
+ if (c == '\n') {
+ auto token_space = command.find(" ");
+ if (token_space != std::string::npos) {
+ std::string op = command.substr(0, token_space);
+ int amt = std::stoi(command.substr(token_space+1));
+ if (op == "forward") {
+ forward += amt;
+ aim_depth += aim * amt;
+ }
+ if (op == "down") {
+ depth += amt;
+ aim += amt;
+ }
+ if (op == "up") {
+ depth -= amt;
+ aim -= amt;
+ }
+ }
+ command = "";
+ }
+ else command += c;
+ c = fgetc(f);
+ }
+
+ std::cout << "depth " << depth << ", "
+ << "forward " << forward << ", "
+ << "product " << depth * forward << std::endl;
+
+ std::cout << "using aim: depth " << aim_depth << ", "
+ << "forward " << forward << ", "
+ << "aim " << aim << ", "
+ << "product " << aim_depth * forward << std::endl;
+
+ return 0;
+}
diff --git a/2021/day02/day02_input.txt b/2021/day02/day02_input.txt
new file mode 100644
index 0000000..7834464
--- /dev/null
+++ b/2021/day02/day02_input.txt
@@ -0,0 +1,1000 @@
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diff --git a/2021/day02/makefile b/2021/day02/makefile
new file mode 100644
index 0000000..61ca2f4
--- /dev/null
+++ b/2021/day02/makefile
@@ -0,0 +1,2 @@
+all day02.cpp:
+ g++ -std=c++20 -o day02 day02.cpp
generated by cgit v1.2.3-54-g00ecf (git 2.45.1) at 2024-11-22 04:27:23 +0000