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79 lines
1.7 KiB
79 lines
1.7 KiB
#include <iostream>
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#include <fstream>
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#include <vector>
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using namespace std;
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enum cmd {
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CMD_FORWARD,
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CMD_DOWN,
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CMD_UP,
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};
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struct commands {
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enum cmd cmd;
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int pos;
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};
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int main(int argc, char *argv[]) {
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if (argc <= 1) return 1;
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vector<struct commands> commands;
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{
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ifstream input(argv[1]);
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if (!input.is_open()) return 1;
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for (string line; getline(input, line);) {
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struct commands command;
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unsigned split = line.find(' ');
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string cmd = line.substr(0, split);
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line.erase(0, split + 1);
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if (cmd == "forward") {
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command.cmd = CMD_FORWARD;
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} else if (cmd == "down") {
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command.cmd = CMD_DOWN;
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} else if (cmd == "up") {
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command.cmd = CMD_UP;
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}
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command.pos = stoi(line);
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commands.push_back(command);
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}
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}
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int pos_h = 0;
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int pos_d = 0;
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for (struct commands command : commands) {
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switch (command.cmd) {
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case CMD_FORWARD:
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pos_h += command.pos;
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break;
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case CMD_DOWN:
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pos_d += command.pos;
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break;
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case CMD_UP:
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pos_d -= command.pos;
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break;
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}
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}
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cout << pos_h * pos_d << endl;
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int aim = 0;
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pos_h = 0;
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pos_d = 0;
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for (struct commands command : commands) {
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switch (command.cmd) {
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case CMD_FORWARD:
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pos_h += command.pos;
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pos_d += aim * command.pos;
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break;
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case CMD_DOWN:
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aim += command.pos;
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break;
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case CMD_UP:
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aim -= command.pos;
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break;
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}
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}
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cout << pos_h * pos_d << endl;
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}
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