moved

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
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