Submission #846377

#	Time	Username	Problem	Language	Result	Execution time	Memory
846377		vjudge1	ČVENK (COI15_cvenk)	C++17	0 / 100	15 ms	2692 KiB

cvenk

/* 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 = 18;

struct Line{
  ll x, y;
  void re(){
    cin >> x >> y;
  }
};

ll r(ll n){
  if(n==0) return MOD;
  return log2(n& -n);
}

ll f(ll x, ll y, ll cost, vector<array<ll, 3>> &g){
  if(x==y){
    g.pb({0, 0, cost});
    return 0;
  }
  g.pb({x, y, cost});
  if(r(x) < r(y)){
    return (1<<r(x)) + f(x - (1<<r(x)), y, 1<<min(r(x), r(y)), g);
  }
  return (1<<r(y)) + f(x, y - (1<<r(y)), 1<<min(r(x), r(y)), g); 
}
int n;
Line a[N];
void solve(){
  cin >> n;
  for(int i = 0; i < n; ++i){
    a[i].re();
  }
  vector<array<ll, 3>> X, Y;
  ll ans = 0;
  ans += f(a[0].x, a[0].y, 0, X);
  ans += f(a[1].x, a[1].y, 0, Y);
  reverse(all(X));
  reverse(all(Y));
  // for(auto k: X){
  //   cout << k[0] << ' ' << k[1] << '\n';
  // }
  // en;
  // for(auto k: Y){
  //   cout << k[0] << ' ' << k[1] << '\n';
  // }
  // en;
  for(int i = 0; i < min(Y.size(), X.size()); ++i){
    if(Y[i][0] == X[i][0] && Y[i][1] == X[i][1]){
      ans -= X[i][2] + Y[i][2];
    }else{
      ans += abs(X[i][0] - Y[i][0]) + abs(Y[i][1] - X[i][1]);
      break;
    }
  }
  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);
  // cin >> tt;
  while(tt--){
    solve();
    // en
  }
  cerr<<"time taken : "<<(float)clock()/CLOCKS_PER_SEC<<" seconds\n";
  return 0;
}

Compilation message (stderr)

cvenk.cpp: In function 'void solve()':
cvenk.cpp:56:20: warning: comparison of integer expressions of different signedness: 'int' and 'const long unsigned int' [-Wsign-compare]
   56 |   for(int i = 0; i < min(Y.size(), X.size()); ++i){
      |                  ~~^~~~~~~~~~~~~~~~~~~~~~~~~
cvenk.cpp: In function 'int main()':
cvenk.cpp:70:15: warning: unused variable 'aa' [-Wunused-variable]
   70 |   int tt = 1, aa;
      |               ^~

• Subtask 1: 0 / 17
• Subtask 2: 0 / 21
• Subtask 3: 0 / 22
• Subtask 4: 0 / 40