Submission #1126659

#	Time	Username	Problem	Language	Result	Execution time	Memory
1126659		ntdaccode	Fortune Telling 2 (JOI14_fortune_telling2)	C++20	100 / 100	277 ms	41876 KiB

fortune_telling2

#include<bits/stdc++.h>
#define fori(i,a,b) for(int i=a;i<=b;i++)
#define int long long
#define pb push_back

using namespace std;

typedef pair<int,int> ii;
typedef tuple<int,int,int> tp;

const int M = 1e6 + 10;
const int N = 1e3 + 10;
const int mod = 1e9 + 7;

int n, k, a[M], b[M];
ii x[M];

int t[4 * M];
void build(int s, int l, int r)
{
  if(l == r) {
    t[s] = x[l].second;
    //cout << l << " " << x[l].second << "\n";
    return ;
  }
  int mid = (l + r)/2;
  build(s * 2, l, mid);
  build(s * 2 + 1, mid + 1, r);
  t[s] = max(t[s * 2], t[s * 2 + 1]);
}

int get(int s, int l, int r,int u,int v)
{
  if(l > v || r < u) return 0;
  if(u <= l && r <= v) return t[s];
  int mid= (l + r)/2;
  return max(get(s * 2, l, mid, u, v), get(s * 2 + 1, mid + 1, r, u, v));
}

int bit[M];
void upd_bit(int idx)
{
  while(idx <= k) {
    bit[idx] ++;
    idx += idx & (-idx);
  }
}

int get_bit(int idx)
{
  int res = 0;
  while(idx > 0) {
    res += bit[idx];
    idx -= idx & (-idx);
  }
  return res;
}

inline int rev(int idx,int val) {
  ii tmp = {idx,val};
  return upper_bound(x , x + k + 1, tmp) - x - 1;
}
vector<ii> Q[M];
int ans[M];
int32_t main()
{
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);

  if(fopen("1.inp","r")) {
    freopen("1.inp","r",stdin);
    freopen("1.out","w",stdout);
  }

  #define task ""
  if(fopen(task".inp","r")) {
    freopen(task".inp","r",stdin);
    freopen(task".out","w",stdout);
  }

  cin >> n >> k;
  for(int i = 1;i <= n; i++) cin >> a[i] >> b[i];
  for(int i = 1;i <= k; i++) {
    cin >> x[i].first ;
    x[i].second = i;
  }
  sort(x + 1,x + k + 1);
  build(1,1,k);
  for(int i = 1;i <= n; i++) {
      int l = rev(min(a[i],b[i]),0) + 1, r = rev(max(a[i],b[i]) - 1,1e9);
      int pos = get(1, 1, k, l, r);
      //cout << l << " " << x[r].second << " " << pos << "\n";
      if(l <= r) {
          Q[pos].pb({i,0});
          if(a[i] < b[i]) ans[i] = 1;
      }
      else Q[x[l].second].pb({i,1});
  }
  for(int i = k;i != 0; i--) {
    int pos = x[i].second;
    if(i != 0) upd_bit(pos);
    for(ii tmp : Q[pos]) {
        int idx = tmp.first, tt = tmp.second;
        //cout << idx << " " << pos << " " <<(k - i + 1 - get_bit(pos)) << "\n";
        if(!tt) ans[idx] = (ans[idx] + (k - i + 1 - get_bit(pos))) % 2;
        else ans[idx] = (ans[idx] + k - i + 1) % 2;
    }
  }

  int kq = 0;

  for(int i = 1;i <= n; i++) {
    if(ans[i]) kq += b[i];
    else kq += a[i];
   // cout << ans[i] << " ";
  }

  cout << kq;


}

Compilation message (stderr)

fortune_telling2.cpp: In function 'int32_t main()':
fortune_telling2.cpp:72:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   72 |     freopen("1.inp","r",stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~
fortune_telling2.cpp:73:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   73 |     freopen("1.out","w",stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~
fortune_telling2.cpp:78:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   78 |     freopen(task".inp","r",stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
fortune_telling2.cpp:79:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   79 |     freopen(task".out","w",stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 4 / 4
• Subtask 2: 31 / 31
• Subtask 3: 65 / 65