diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/2018/day4/aoc.cpp | 5 | ||||
| -rw-r--r-- | src/2019/day4/README.md | 17 | ||||
| -rw-r--r-- | src/2019/day4/aoc.h | 1 |
3 files changed, 18 insertions, 5 deletions
diff --git a/src/2018/day4/aoc.cpp b/src/2018/day4/aoc.cpp index 811d5b5..6df496c 100644 --- a/src/2018/day4/aoc.cpp +++ b/src/2018/day4/aoc.cpp @@ -17,14 +17,10 @@ std::pair<int, int> mostlikely(guard* g) { int most{INT32_MIN}; int highest{INT32_MIN}; for (int i = 0; i < 60; i++) { - // printf("%02d ", minute[i]); if (minute[i] > highest) { most = i; highest = minute[i]; } - // if ((i + 1) % 10 == 0) { - // printf("\n"); - //} } return {most, highest}; } @@ -102,7 +98,6 @@ std::pair<int, int> day4(line_view file) { for (auto& kv : hs) { int off = totaloff(kv.second); - // printf("%d: %d\n", kv.second->id, off); if (mostoff.g == nullptr || mostoff.off < off) { mostoff.g = kv.second; mostoff.off = off; diff --git a/src/2019/day4/README.md b/src/2019/day4/README.md index e69de29..616ef85 100644 --- a/src/2019/day4/README.md +++ b/src/2019/day4/README.md @@ -0,0 +1,17 @@ +--- Day 4: Secure Container --- +You arrive at the Venus fuel depot only to discover it's protected by a password. The Elves had written the password on a sticky note, but someone threw it out. + +However, they do remember a few key facts about the password: + +It is a six-digit number. +The value is within the range given in your puzzle input. +Two adjacent digits are the same (like 22 in 122345). +Going from left to right, the digits never decrease; they only ever increase or stay the same (like 111123 or 135679). +Other than the range rule, the following are true: + +111111 meets these criteria (double 11, never decreases). +223450 does not meet these criteria (decreasing pair of digits 50). +123789 does not meet these criteria (no double). +How many different passwords within the range given in your puzzle input meet these criteria? + + diff --git a/src/2019/day4/aoc.h b/src/2019/day4/aoc.h index 959d6d8..56ffadb 100644 --- a/src/2019/day4/aoc.h +++ b/src/2019/day4/aoc.h @@ -3,4 +3,5 @@ namespace aoc2019 { +int day4(line_view); } |