Submission #883083

#	Time	Username	Problem	Language	Result	Execution time	Memory
883083		vjudge1	Coin Collecting (JOI19_ho_t4)	C++17	0 / 100	1 ms	348 KiB

joi2019_ho_t4

/* Author : Mychecksdead  */
#include<bits/stdc++.h>
using namespace std;
#define ll long long int
#define MOD (1000000000+7)
#define MOD1 (998244353)
#define pb push_back
#define all(x) x.begin(), x.end()
#define en cout << '\n'
const int N = 1e6+100, M = 1e5+10, K = 52, MX = 30;


int n;
array<ll, 2> a[N];
void solve(){
  cin >> n;
  for(int i = 1; i <= 2*n; ++i) cin >> a[i][0] >> a[i][1];
  ll ans = 0;
  for(int i = 1; i <= 2*n; ++i){
    if(a[i][1] >= 2){
      ans += a[i][1] - 2;
      a[i][1] = 2;
    }else if(a[i][1] <= 1){
      ans += 1 - a[i][1];
      a[i][1] = 1;
    }
    if(a[i][0] <= 1){
      ans += 1 - a[i][0];
      a[i][0] = 1;
    }else if(a[i][0] >= n){
      ans += a[i][0] - n;
      a[i][0] = n;
    }
  }
  sort(a+1, a+1+2*n);

  deque<int> X, Y;
  for(int i = 1; i <= 2*n; ++i){
    if(a[i][1] == 1) X.pb(a[i][0]);
    else Y.pb(a[i][0]);
  }

  for(int i = 1; i <= n; ++i){
    for(int rep = 0; rep < 2; ++rep){
      if(!X.empty()){
        if(Y.empty()){
          ans += abs(X.front() - i);
          X.pop_front();
        }else{
          if(X.front() <= Y.front() + 1){
            ans += abs(X.front() - i);
            X.pop_front();
          }else{
            ans += abs(Y.front() - i) + 1;
            Y.pop_front();
          }
        }
      }else{
        ans += abs(Y.front() - i) + 1;
        Y.pop_front();
      }
      swap(X, Y);
    }
  }

  cout << ans;
}


int main(){
  cin.tie(0); ios::sync_with_stdio(0);
  int tt = 1, aa;
  // freopen("in.txt", "r", stdin);
  // freopen("out.txt", "w", stdout);
  while(tt--){
    solve();
    en;
  }
  cerr<<"time taken : "<<(float)clock()/CLOCKS_PER_SEC<<" seconds\n";
  return 0;
} 

Compilation message (stderr)

joi2019_ho_t4.cpp: In function 'int main()':
joi2019_ho_t4.cpp:72:15: warning: unused variable 'aa' [-Wunused-variable]
   72 |   int tt = 1, aa;
      |               ^~

• Subtask 1: 0 / 8
• Subtask 2: 0 / 29
• Subtask 3: 0 / 63