oj.uz

Submission #540171

# Submission time Handle Problem Language Result Execution time Memory
540171 2022-03-19T13:52:28 Z cig32 Fortune Telling 2 (JOI14_fortune_telling2) C++17
100 / 100
 220 ms 42884 KB 
#include "bits/stdc++.h"
using namespace std;
const int MAXN = 2e5 + 10;
const int MOD = 1e9 + 7;
#define int long long
#define ll __int128
mt19937_64 rng((int)std::chrono::steady_clock::now().time_since_epoch().count());
int rnd(int x, int y) {
  int u = uniform_int_distribution<int>(x, y)(rng); return u;
}
ll read() { // read int128
  int x; cin >> x; return (ll)x;
}
long long bm(long long b, long long p) {
  if(p==0) return 1 % MOD;
  long long r = bm(b, p >> 1);
  if(p&1) return (((r*r) % MOD) * b) % MOD;
  return (r*r) % MOD;
}
long long inv(long long b) { 
  return bm(b, MOD-2);
}
long long f[MAXN];
long long nCr(int n, int r) { 
  long long ans = f[n]; ans *= inv(f[r]); ans %= MOD;
  ans *= inv(f[n-r]); ans %= MOD; return ans;
}
void precomp() { 
  for(int i=0; i<MAXN; i++) f[i] = (i == 0 ? 1 % MOD : (f[i-1] * i) % MOD);
}
struct query {
  int a, b;
  int mi, ma;
};
bool cmp(query x, query y) {
  return x.ma < y.ma;
}

struct segtree {
  struct node {
    int mi, cntmi;
    int ma, cntma;
  };
  vector<node> st;
  int stok;

  void bu(int l, int r, int idx) {
    if(l == r) {
      st[idx].mi = 0;
      st[idx].ma = 0;
      st[idx].cntmi = 1;
      st[idx].cntma = 1;
      return;
    }
    int mid = (l + r) >> 1;
    bu(l, mid, 2*idx+1);
    bu(mid+1, r, 2*idx+2);
    st[idx].mi = 0, st[idx].ma = 0;
    st[idx].cntmi = st[2*idx+1].cntmi + st[2*idx+2].cntmi;
    st[idx].cntma = st[2*idx+1].cntma + st[2*idx+2].cntma;
  }

  void u(int l, int r, int tar, int idx, int val) {
    if(l == r) {
      st[idx].mi = st[idx].ma = val;
      return;
    }
    int mid = (l+r) >> 1;
    if(tar <= mid) u(l, mid, tar, 2*idx+1, val);
    else u(mid+1, r, tar, 2*idx+2, val);
    st[idx].mi = min(st[2*idx+1].mi, st[2*idx+2].mi);
    st[idx].ma = max(st[2*idx+1].ma, st[2*idx+2].ma);
    if(st[2*idx+1].mi == st[2*idx+2].mi) st[idx].cntmi = st[2*idx+1].cntmi + st[2*idx+2].cntmi;
    else st[idx].cntmi = (st[2*idx+1].mi < st[2*idx+2].mi ? st[2*idx+1].cntmi : st[2*idx+2].cntmi);
    if(st[2*idx+1].ma == st[2*idx+2].ma) st[idx].cntma = st[2*idx+1].cntma + st[2*idx+2].cntma;
    else st[idx].cntma = (st[2*idx+1].ma > st[2*idx+2].ma ? st[2*idx+1].cntma : st[2*idx+2].cntma);
  }

  int qu1(int l, int r, int constl, int constr, int idx, int val) {
    if(l <= constl && constr <= r) {
      if(st[idx].ma < val) return -1;
      while(constl < constr) {
        int mid = (constl +constr) >> 1;
        if(st[2*idx+2].ma >= val) constl = mid + 1, idx = 2*idx + 2;
        else constr = mid, idx = 2*idx + 1;
      }
      return constl;
    }
    int mid = (constl + constr) >> 1;
    if(mid < l || r <constl) return qu1(l, r, mid+1, constr, 2*idx+2, val);
    else if(constr < l || r < mid+1) return qu1(l, r, constl, mid, 2*idx+1, val);
    else {
      int res = qu1(l, r, mid+1, constr, 2*idx+2, val);
      if(res != -1) return res;
      return qu1(l, r, constl, mid, 2*idx+1, val);
    }
  }

  pair<int, int> qu2(int l, int r, int constl, int constr, int idx) {
    if(l<=constl && constr<=r) return {st[idx].mi, st[idx].cntmi};
    int mid = (constl +constr) >> 1;
    if(mid < l || r < constl) return qu2(l, r, mid+1, constr, 2*idx+2);
    else if(constr < l || r <mid+1) return qu2(l,r ,constl, mid, 2*idx+1);
    else {
      pair<int, int> lchild = qu2(l, r, constl, mid, 2*idx+1);
      pair<int, int> rchild = qu2(l, r, mid+1, constr, 2*idx+2);
      if(lchild.first != rchild.first) return min(lchild, rchild);
      else return {lchild.first, lchild.second + rchild.second};
    }
  }
  public:
  void resize(int k) {
    stok = k;
    st.resize(4*k + 10);
  }
  void build() {
    bu(1, stok, 0);
  }

  void point_update(int i, int v) {
    u(1, stok, i, 0, v);
  }
  int last_atleast(int l, int r, int v) {
    return qu1(l, r, 1, stok, 0, v);
  }
  pair<int, int> min_cnt(int l, int r) {
    return qu2(l, r, 1, stok, 0);
  }
};

void solve(int tc) {
  segtree st;
  int n, k;
  cin >> n >> k;
  st.resize(k);
  st.build();
  query q[n];
  for(int i=0; i<n; i++) {
    cin >> q[i].a >> q[i].b;
    q[i].mi = min(q[i].a, q[i].b);
    q[i].ma = max(q[i].a, q[i].b);
  }
  sort(q, q+n, cmp);
  vector<pair<int, int> > v;
  for(int i=1; i<=k; i++) {
    int y;
    cin >> y;
    v.push_back({y, i});
  }
  sort(v.begin(), v.end());
  int vptr = 0;
  int res = 0;
  for(int i=0; i<n; i++) {
    
    int og = res;
    while(vptr != v.size() && v[vptr].first < q[i].ma) {
      st.point_update(v[vptr].second, v[vptr].first);
      //cout << "st[" << v[vptr].second << "] := " << v[vptr].first << "\n";
      vptr++;
    }
    //cout << "original: " << q[i].a << ", final: ";
    int idx = st.last_atleast(1, k, q[i].mi);
    if(idx == -1) { // A operations only
      pair<int, int> ono = st.min_cnt(1, k);
      if(ono.first == 0 && ono.second % 2 == 1) { // changed
        res += q[i].b;
      }
      else {
        res += q[i].a;
      }
    }
    else if(q[i].a == q[i].b) { // doesn't matter
      res += q[i].a;
    }
    else if(idx + 1 > k) { // last operation is S
      res += q[i].ma;
    }
    else { 
      //cout << "!!! " << idx << " ";
      pair<int, int> ono = st.min_cnt(idx + 1, k);
      //cout << ono.second << " ";
      if(ono.first == 0 && ono.second % 2 == 1) { // changed
        res += q[i].mi;
      }
      else {
        res += q[i].ma;
      }
    }
    //cout << res - og << '\n';
  }
  cout << res << '\n';
}
int32_t main(){
  precomp();
  ios::sync_with_stdio(0); cin.tie(0);
  int t = 1; //cin >> t;
  for(int i=1; i<=t; i++) solve(i);
} 
/*
6 6
1 13
14 23
5 17
10 23
6 10
12 18
10
20
19
17
21
30
*/

Compilation message

fortune_telling2.cpp: In function 'void solve(long long int)':
fortune_telling2.cpp:156:16: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  156 |     while(vptr != v.size() && v[vptr].first < q[i].ma) {
      |           ~~~~~^~~~~~~~~~~
fortune_telling2.cpp:155:9: warning: unused variable 'og' [-Wunused-variable]
  155 |     int og = res;
      |         ^~

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 2004 KB Output is correct
2 Correct 3 ms 2004 KB Output is correct
3 Correct 3 ms 2004 KB Output is correct
4 Correct 3 ms 2004 KB Output is correct
5 Correct 3 ms 2004 KB Output is correct
6 Correct 3 ms 2004 KB Output is correct
7 Correct 3 ms 2004 KB Output is correct
8 Correct 3 ms 1972 KB Output is correct
9 Correct 3 ms 2004 KB Output is correct
10 Correct 3 ms 2004 KB Output is correct
11 Correct 3 ms 2004 KB Output is correct
12 Correct 3 ms 2004 KB Output is correct
13 Correct 3 ms 2004 KB Output is correct

Subtask #2
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 2004 KB Output is correct
2 Correct 3 ms 2004 KB Output is correct
3 Correct 3 ms 2004 KB Output is correct
4 Correct 3 ms 2004 KB Output is correct
5 Correct 3 ms 2004 KB Output is correct
6 Correct 3 ms 2004 KB Output is correct
7 Correct 3 ms 2004 KB Output is correct
8 Correct 3 ms 1972 KB Output is correct
9 Correct 3 ms 2004 KB Output is correct
10 Correct 3 ms 2004 KB Output is correct
11 Correct 3 ms 2004 KB Output is correct
12 Correct 3 ms 2004 KB Output is correct
13 Correct 3 ms 2004 KB Output is correct
14 Correct 10 ms 3796 KB Output is correct
15 Correct 20 ms 5684 KB Output is correct
16 Correct 29 ms 7256 KB Output is correct
17 Correct 40 ms 10436 KB Output is correct
18 Correct 41 ms 10452 KB Output is correct
19 Correct 37 ms 10440 KB Output is correct
20 Correct 40 ms 10432 KB Output is correct
21 Correct 40 ms 10444 KB Output is correct
22 Correct 33 ms 9940 KB Output is correct
23 Correct 32 ms 9932 KB Output is correct
24 Correct 34 ms 9928 KB Output is correct
25 Correct 31 ms 9932 KB Output is correct
26 Correct 34 ms 10080 KB Output is correct
27 Correct 38 ms 10468 KB Output is correct
28 Correct 38 ms 10444 KB Output is correct
29 Correct 39 ms 10472 KB Output is correct

Subtask #3
65.0 / 65.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 2004 KB Output is correct
2 Correct 3 ms 2004 KB Output is correct
3 Correct 3 ms 2004 KB Output is correct
4 Correct 3 ms 2004 KB Output is correct
5 Correct 3 ms 2004 KB Output is correct
6 Correct 3 ms 2004 KB Output is correct
7 Correct 3 ms 2004 KB Output is correct
8 Correct 3 ms 1972 KB Output is correct
9 Correct 3 ms 2004 KB Output is correct
10 Correct 3 ms 2004 KB Output is correct
11 Correct 3 ms 2004 KB Output is correct
12 Correct 3 ms 2004 KB Output is correct
13 Correct 3 ms 2004 KB Output is correct
14 Correct 10 ms 3796 KB Output is correct
15 Correct 20 ms 5684 KB Output is correct
16 Correct 29 ms 7256 KB Output is correct
17 Correct 40 ms 10436 KB Output is correct
18 Correct 41 ms 10452 KB Output is correct
19 Correct 37 ms 10440 KB Output is correct
20 Correct 40 ms 10432 KB Output is correct
21 Correct 40 ms 10444 KB Output is correct
22 Correct 33 ms 9940 KB Output is correct
23 Correct 32 ms 9932 KB Output is correct
24 Correct 34 ms 9928 KB Output is correct
25 Correct 31 ms 9932 KB Output is correct
26 Correct 34 ms 10080 KB Output is correct
27 Correct 38 ms 10468 KB Output is correct
28 Correct 38 ms 10444 KB Output is correct
29 Correct 39 ms 10472 KB Output is correct
30 Correct 136 ms 33132 KB Output is correct
31 Correct 152 ms 35136 KB Output is correct
32 Correct 168 ms 37720 KB Output is correct
33 Correct 206 ms 42772 KB Output is correct
34 Correct 116 ms 32600 KB Output is correct
35 Correct 213 ms 42700 KB Output is correct
36 Correct 207 ms 42768 KB Output is correct
37 Correct 220 ms 42776 KB Output is correct
38 Correct 211 ms 42780 KB Output is correct
39 Correct 214 ms 42820 KB Output is correct
40 Correct 211 ms 42524 KB Output is correct
41 Correct 205 ms 42732 KB Output is correct
42 Correct 214 ms 42784 KB Output is correct
43 Correct 189 ms 42232 KB Output is correct
44 Correct 186 ms 42128 KB Output is correct
45 Correct 195 ms 42040 KB Output is correct
46 Correct 185 ms 41116 KB Output is correct
47 Correct 192 ms 40984 KB Output is correct
48 Correct 212 ms 42772 KB Output is correct
49 Correct 182 ms 42884 KB Output is correct