結果
| 問題 |
No.1650 Moving Coins
|
| コンテスト | |
| ユーザー |
keijak
|
| 提出日時 | 2021-08-21 06:41:02 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 58 ms / 2,000 ms |
| コード長 | 3,041 bytes |
| コンパイル時間 | 1,832 ms |
| コンパイル使用メモリ | 199,012 KB |
| 最終ジャッジ日時 | 2025-01-24 01:10:27 |
|
ジャッジサーバーID (参考情報) |
judge4 / judge3 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 24 |
ソースコード
#include <bits/stdc++.h>
#define REP_(i, a_, b_, a, b, ...) \
for (int i = (a), END_##i = (b); i < END_##i; ++i)
#define REP(i, ...) REP_(i, __VA_ARGS__, __VA_ARGS__, 0, __VA_ARGS__)
#define ALL(x) std::begin(x), std::end(x)
using i64 = long long;
template<typename T, typename U>
inline bool chmax(T &a, U b) {
return a < b and ((a = std::move(b)), true);
}
template<typename T, typename U>
inline bool chmin(T &a, U b) {
return a > b and ((a = std::move(b)), true);
}
template<typename T>
inline int ssize(const T &a) {
return (int) std::size(a);
}
template<typename T>
std::istream &operator>>(std::istream &is, std::vector<T> &a) {
for (auto &x : a) is >> x;
return is;
}
template<typename T, typename U>
std::ostream &operator<<(std::ostream &os, const std::pair<T, U> &a) {
return os << "(" << a.first << ", " << a.second << ")";
}
template<typename Container>
std::ostream &print_seq(const Container &a, std::string_view sep = " ",
std::string_view ends = "\n",
std::ostream &os = std::cout) {
auto b = std::begin(a), e = std::end(a);
for (auto it = std::begin(a); it != e; ++it) {
if (it != b) os << sep;
os << *it;
}
return os << ends;
}
template<typename T, typename = void>
struct is_iterable : std::false_type {};
template<typename T>
struct is_iterable<T, std::void_t<decltype(std::begin(std::declval<T>())),
decltype(std::end(std::declval<T>()))>>
: std::true_type {
};
template<typename T, typename = std::enable_if_t<
is_iterable<T>::value &&
!std::is_same<T, std::string_view>::value &&
!std::is_same<T, std::string>::value>>
std::ostream &operator<<(std::ostream &os, const T &a) {
return print_seq(a, ", ", "", (os << "{")) << "}";
}
void print() { std::cout << "\n"; }
template<class T>
void print(const T &x) {
std::cout << x << "\n";
}
template<typename Head, typename... Tail>
void print(const Head &head, Tail... tail) {
std::cout << head << " ";
print(tail...);
}
struct Input {
template<typename T>
operator T() const {
T x;
std::cin >> x;
return x;
}
} in;
#ifdef MY_DEBUG
#include "debug_dump.hpp"
#else
#define DUMP(...)
#endif
using namespace std;
auto solve() {
int n = in;
vector<int> a(n), b(n);
cin >> a >> b;
vector<pair<int, char>> ans;
int l = 0;
for (int r = 0; r < n; ++r) {
bool ok = false;
if (a[r] == b[r]) {
ok = true;
} else if (a[r] > b[r] and (r == 0 or a[r - 1] < b[r])) {
ok = true;
} else if (a[r] < b[r] and (r == n - 1 or b[r] < a[r + 1])) {
ok = true;
}
if (not ok) continue;
for (int j = r; j >= l; --j) {
while (a[j] > b[j]) {
ans.push_back({j + 1, 'L'});
--a[j];
}
while (a[j] < b[j]) {
ans.push_back({j + 1, 'R'});
++a[j];
}
}
l = r + 1;
}
print(ans.size());
for (auto[k, c]:ans) {
print(k, c);
}
}
int main() {
ios_base::sync_with_stdio(false), cin.tie(nullptr);
solve();
}
keijak