結果

問題 No.1650 Moving Coins
ユーザー yuji9511
提出日時 2021-08-20 22:09:31
言語 C++17
(gcc 13.3.0 + boost 1.87.0)
結果
WA  
実行時間 -
コード長 1,855 bytes
コンパイル時間 2,207 ms
コンパイル使用メモリ 199,492 KB
最終ジャッジ日時 2025-01-23 23:33:23
ジャッジサーバーID
（参考情報） 		judge2 / judge5
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ファイルパターン 結果
sample AC * 3
other AC * 10 WA * 14
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ソースコード

diff #
プレゼンテーションモードにする

/*** author: yuji9511 ***/
#include <bits/stdc++.h>
// #include <atcoder/all>
// using namespace atcoder;
using namespace std;
using ll = long long;
using lpair = pair<ll, ll>;
using vll = vector<ll>;
const ll MOD = 1e9+7;
const ll INF = 1e18;
#define rep(i,m,n) for(ll i=(m);i<(n);i++)
#define rrep(i,m,n) for(ll i=(m);i>=(n);i--)
ostream& operator<<(ostream& os, lpair& h){ os << "(" << h.first << ", " << h.second << ")"; return os;}
#define printa(x,n) for(ll i=0;i<n;i++){cout<<(x[i])<<" \n"[i==n-1];};
void print() {}
template <class H,class... T>
void print(H&& h, T&&... t){cout<<h<<" \n"[sizeof...(t)==0];print(forward<T>(t)...);}
template<class T>bool chmax(T &a, const T &b) { if (a<b) { a=b; return 1; } return 0; }
template<class T>bool chmin(T &a, const T &b) { if (b<a) { a=b; return 1; } return 0; }
void solve(){
  ll N;
  cin >> N;
  vll A(N), B(N);
  rep(i,0,N) cin >> A[i];
  rep(i,0,N) cin >> B[i];
  ll idx = -1;
  vector<pair<int, char> > ans;
  rep(i,0,N){
    bool ok = false;
    if(i == 0){
      if(B[i] <= A[i]) ok = true;
    }else{
      if(B[i] < A[i-1]) ok = true;
    }
    if(i == N-1){
      if(B[i] >= A[i]) ok = true;
    }else{
      if(B[i] < A[i+1]) ok = true;
    }
    if(ok){
      idx = i;
      break;
    }
  }
  assert(idx != -1);
  rrep(i,idx,0){
    ll diff = A[i] - B[i];
    if(diff > 0){
      rep(n,0,diff){
        ans.push_back({i+1, 'L'});
      }
    }else{
      rep(n,0,-diff){
        ans.push_back({i+1, 'R'});
      }
    }
  }
  rep(i,idx+1,N){
    ll diff = A[i] - B[i];
    if(diff > 0){
      rep(n,0,diff){
        ans.push_back({i+1, 'L'});
      }
    }else{
      rep(n,0,-diff){
        ans.push_back({i+1, 'R'});
      }
    }
  }
  print(ans.size());
  for(auto &e: ans){
    print(e.first, e.second);
  }
}
int main(){
  cin.tie(0);
  ios::sync_with_stdio(false);
  solve();
}
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