03
This commit is contained in:
parent
2590c67c63
commit
acbac89af1
16
2022/03/Makefile
Normal file
16
2022/03/Makefile
Normal file
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@ -0,0 +1,16 @@
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CXX ?= c++
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CXXFLAGS ?= -std=c++11 -Wall -Wextra -pedantic -O2
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PROJECT = rucksack
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all: ${PROJECT}
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${PROJECT}: main.cpp
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${CXX} ${CXXFLAGS} -o $@ $^
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test: ${PROJECT}
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./${PROJECT}
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clean:
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${RM} *.o ${PROJECT}
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.PHONY: all clean test
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300
2022/03/input
Normal file
300
2022/03/input
Normal file
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@ -0,0 +1,300 @@
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|
||||
sHMHCDZfcwMcRcLMcZDCRCHMPdJqgjvVdvqgdgfdJbQgvWQb
|
||||
FFhTzmzGrnmtjTBjBBprrmFtqGgQqvVdPbbgqQQWJvvWJQqV
|
||||
TrNjrnFSlwNZNlNL
|
||||
JQGdsdzSzsdFQFSdssnndNlZjNPTJZNljVjTPhVPhT
|
||||
GgGLfRmHGLhNVjjNTLhV
|
||||
HvGvwpbHHRwpBrvBgSSzSFndtzndCrsFMd
|
||||
DptFshMrhDhDwmPPhwSNhmmS
|
||||
RLdcdRvBjnvRVcvlcLbCcbCwwpGBwSmfZqqPPPPwzmfqZq
|
||||
VlRLvVjCJLnlpvvRdllLcJJWDHgMMHDDHtWFFDDQgH
|
||||
SsSdrndpDlCdLftd
|
||||
VGPVJgmQrVGHHZfwLlfCTmfwlDlT
|
||||
PcJHcGgcWWbJpjRrphRbFpRn
|
||||
PdPSMHMLzPPSShBdffMMzMRHQQrpppcqTCQQpCccTGTRCnCQ
|
||||
vsbWmFbmJmZFFsmsbfpGVrGnWrrpVpnnVcTV
|
||||
JZslstfZNNSSPdlSMwlM
|
||||
bLLzRzZLbRqJJrDGGVZdwssDvGQw
|
||||
FCtNJlTFtmPfldSvDvQFVVsjSv
|
||||
PmCPHBhhPpWLWgzgHJ
|
||||
qwmwFHCgPgPPqPwMCrHHFBVVRBttVRRffVfmsjVNNB
|
||||
WSvcSnvbSWbhcbjlQbvlSQhlfBGcspVVsVGfVscpzpNcpBtN
|
||||
hJSLhlvlTjPFHMLCCq
|
||||
bggDpTggncGVVWbQcG
|
||||
sRvSwwwFBSpFzvRvMFZqmPmMVqmcmPPVqhqqWq
|
||||
SRBBrFZZwrddBFRjlptnLgDnTggdtd
|
||||
PPfMcZMflbMQcMllPVfTVMwjWWmZvpWWpWhhjjpdWWww
|
||||
sDQNnzsnQgDNsFzFqtGjGmWWSpWrGhdpvphdSW
|
||||
nNQNqLBHLqzDnHgnVJfPJPCRBbfCcJlT
|
||||
fppppWsjcSDPjjDpGhgwbfTgHTCbHJwbHbTR
|
||||
rLBdQnvMNMmFPbLqHqTqgLHCgL
|
||||
nrFznvMNMQdttrBcScsDstWcPGtWSc
|
||||
lclnRSDnGZtvSwnZDZzhLffqdsCNwTBCBBdNsd
|
||||
mPjmjmrFFpmQjMJQjlNdlhCsCLsTlNLs
|
||||
ggmrHHVVQVPJpWrgpWScRvzZzGGRnZvlgzZn
|
||||
GjGJGQJGcMTVfFDQzNVQzP
|
||||
mHqdbmmdnJqVzVhRVNzPbR
|
||||
wStmHJsJsLZLjTvM
|
||||
QssMbVGdMQjZPjwVwHVZPZClllvgSgvlTgwwSSCgSCtC
|
||||
WmmFBmJrcFRBFrJJBFchzWCStgCTgvhvTlfsNqfTlvTv
|
||||
sFzzssDLzrBPjDVVddHMQD
|
||||
fztDZSGrNrlnbnPTgFFpln
|
||||
jvvQMMcLcjJmQwHdJvjQJnnbTbRFRphnnpsWgmFRPR
|
||||
vTLHHCQLHBBjJCSZrVCZtSfSfrft
|
||||
gHfHffHLjwHrRjLrLRZVMnTdTBsNTBwTVBsBnN
|
||||
DWPhqhhDhvSGvWPzSzMBQBQVMMBBmvssvQvQ
|
||||
CDGbqCDbChSbWGrHcHRgbcVcfrLJ
|
||||
frlTLmtllbbbdpJS
|
||||
qFjhzjThjHTFGHTjqhhjMzBhVpVpdbBnSJQRpBnVVdbRRQJd
|
||||
vjWPWjWPPPWgwmfCrNvTvZ
|
||||
85
2022/03/main.cpp
Normal file
85
2022/03/main.cpp
Normal file
|
|
@ -0,0 +1,85 @@
|
|||
#include <fstream>
|
||||
#include <iostream>
|
||||
#include <sstream>
|
||||
#include <vector>
|
||||
#include <unordered_set>
|
||||
|
||||
using Rucksack = std::pair<std::unordered_set<char>, std::unordered_set<char>>;
|
||||
std::vector<Rucksack> getRucksacks( std::ifstream &file ) {
|
||||
std::vector<Rucksack> ret{};
|
||||
std::string str;
|
||||
while ( std::getline( file, str ) ) {
|
||||
ret.emplace_back();
|
||||
for(size_t i = 0; i < str.length()/2; i++) {
|
||||
ret.back().first.emplace(str[i]);
|
||||
}
|
||||
for(size_t i = str.length()/2; i < str.length(); i++) {
|
||||
ret.back().second.emplace(str[i]);
|
||||
}
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
size_t getItemPriority(char item) {
|
||||
if(item <= 'Z') {
|
||||
return item - 'A' + 27;
|
||||
}
|
||||
return item - 'a' + 1;
|
||||
}
|
||||
|
||||
size_t getPriorityPart1(const std::vector<Rucksack> &rucksacks) {
|
||||
size_t res = 0;
|
||||
for(auto &rucksack : rucksacks) {
|
||||
for(auto &item : rucksack.first) {
|
||||
if(rucksack.second.find(item) != rucksack.second.end()) {
|
||||
res += getItemPriority(item);
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
return res;
|
||||
}
|
||||
|
||||
void findItemsInCommon(const std::unordered_set<char> &a, const std::unordered_set<char> &b, std::unordered_set<char> &result) {
|
||||
for(auto &item : a) {
|
||||
if(b.find(item) != b.end()) {
|
||||
result.emplace(item);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
size_t getPriorityPart2(const std::vector<Rucksack> &rucksacks) {
|
||||
size_t res = 0;
|
||||
for(size_t group = 0; group < rucksacks.size(); group += 3) {
|
||||
std::unordered_set<char> possibilities{};
|
||||
findItemsInCommon(rucksacks[group].first, rucksacks[group+1].first, possibilities);
|
||||
findItemsInCommon(rucksacks[group].first, rucksacks[group+1].second, possibilities);
|
||||
findItemsInCommon(rucksacks[group].second, rucksacks[group+1].first, possibilities);
|
||||
findItemsInCommon(rucksacks[group].second, rucksacks[group+1].second, possibilities);
|
||||
std::unordered_set<char> result{};
|
||||
findItemsInCommon(rucksacks[group+2].first, possibilities, result);
|
||||
findItemsInCommon(rucksacks[group+2].first, possibilities, result);
|
||||
findItemsInCommon(rucksacks[group+2].second, possibilities, result);
|
||||
findItemsInCommon(rucksacks[group+2].second, possibilities, result);
|
||||
if(result.size() != 1) {
|
||||
std::cerr << "Something strange is afoot!" << std::endl;
|
||||
for(auto &item : result) {
|
||||
std::cerr << item << std::endl;
|
||||
}
|
||||
exit(1);
|
||||
}
|
||||
res += getItemPriority(*result.begin());
|
||||
}
|
||||
return res;
|
||||
}
|
||||
|
||||
int main() {
|
||||
std::ifstream input_file( "input" );
|
||||
auto rucksacks = getRucksacks( input_file );
|
||||
int part1 = getPriorityPart1(rucksacks);
|
||||
std::cout << "Priority of item types that are in both compartmens is \033[91;1m" << part1
|
||||
<< "\033[0m." << std::endl;
|
||||
int part2 = getPriorityPart2(rucksacks);
|
||||
std::cout << "Priority of all Elf groups is \033[91;1m" << part2
|
||||
<< "\033[0m." << std::endl;
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user