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simplify

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This commit is contained in:
Adam Jeniski 2025-12-15 10:14:26 -10:00
parent ebdab4a2e0
commit fb82f11b39
1 changed files with 3 additions and 16 deletions
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17
src/day2.cpp
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@ -24,6 +24,7 @@ int main() {
} }
std::cout << "Part 1: " << part_1(v) << std::endl; std::cout << "Part 1: " << part_1(v) << std::endl;
std::cout << "Part 2: " << part_2(v) << std::endl; std::cout << "Part 2: " << part_2(v) << std::endl;
return 0;
} }
int64_t part_1(const std::vector<Data> &v) { int64_t part_1(const std::vector<Data> &v) {
@ -60,24 +61,10 @@ int64_t solve_n(int64_t n) {
} }
int64_t part_2(const std::vector<Data> &v) { int64_t part_2(const std::vector<Data> &v) {
int64_t ans{0}; return std::accumulate(v.begin(), v.end(), 0ll, [](int64_t acc, Data d) {
for (auto d : v) {
for (auto n{d.min}; n <= d.max; ++n) {
ans += solve_n(n);
}
}
// todo: dead code, delete me, then inline solve_n
int64_t foobar = std::accumulate(v.begin(), v.end(), 0, [&ans](int64_t acc, Data d) {
for (auto n{d.min}; n <= d.max; ++n) { for (auto n{d.min}; n <= d.max; ++n) {
acc += solve_n(n); acc += solve_n(n);
} }
return acc; return acc;
}); });
// help please :)
// why ans != foobar? looks like same but not same
// stepping through with debugger, it even seems the same on last iteration of accumulate
return ans;
} }