oj.uz

Submission #766107

# Submission time Handle Problem Language Result Execution time Memory
766107 2023-06-25T10:20:08 Z mgl_diamond Growing Trees (BOI11_grow) C++14
100 / 100
 58 ms 3396 KB 
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ii = pair<int, int>;

#define foru(i, l, r) for(int i=(l); i<=(r); ++i)
#define ford(i, l, r) for(int i=(l); i>=(r); --i)
#define fore(x, v) for(auto &x : v)
#define fi first
#define se second

void setIO(string name) {
  if (!name.empty()) {
    freopen((name + ".in").c_str(), "r", stdin);
    freopen((name + ".out").c_str(), "w", stdout);
  }
}

const int N = 1e5+5;
const int LOG = 17;

int n, m, a[N], bit[N];

void modify(int i, int v) {
  for(; i<=n; i+=i&-i) bit[i] += v;
}

int query(int i) {
  int ans = 0;
  for(; i>=1; i-=i&-i) ans += bit[i];
  return ans;
}

void inc(int l, int r, int val) {
  modify(l, val);
  modify(r+1, -val);
}

int lst(int val) {
  int cur = 0, till = 0;
  for(int i=LOG-1; i>=0; --i)
    if (cur+(1<<i) <= n && till+bit[cur+(1<<i)] <= val)
      cur += 1 << i, till += bit[cur];
  return cur;
}

void solve () {
  cin >> n >> m;

  foru(i, 1, n) cin >> a[i];
  sort(a+1, a+n+1);
  foru(i, 1, n) modify(i, a[i] - a[i-1]);

  foru(i, 1, m) {
    char cmd;
    cin >> cmd;

    if (cmd == 'F') {
      int c, h;
      cin >> c >> h;
      int lb = lst(h-1)+1, alpha = min(n, lb+c-1);
      int mx_value = query(alpha);
      int rb = lst(mx_value), rx = lst(mx_value-1);
      inc(lb, rx, 1);
      int lx = max(rx+1, rb - (c - (rx-lb+1)) + 1);
      inc(lx, rb, 1);
    } 
    else {
      int mn, mx;
      cin >> mn >> mx;
      cout << lst(mx) - lst(mn-1) << "\n";
    }
  }
}

int main() {
  ios::sync_with_stdio(0);
  cin.tie(0); cout.tie(0);
  setIO("");
  solve();
}

Compilation message

grow.cpp: In function 'void setIO(std::string)':
grow.cpp:14:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |     freopen((name + ".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
grow.cpp:15:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |     freopen((name + ".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 41 ms 2332 KB Output is correct
2 Correct 47 ms 2680 KB Output is correct
3 Correct 33 ms 2608 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 2 ms 340 KB Output is correct
4 Correct 1 ms 372 KB Output is correct
5 Correct 23 ms 1388 KB Output is correct
6 Correct 26 ms 1612 KB Output is correct
7 Correct 2 ms 340 KB Output is correct
8 Correct 19 ms 1180 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 1656 KB Output is correct
2 Correct 25 ms 1700 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 21 ms 1312 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 26 ms 1856 KB Output is correct
2 Correct 27 ms 1620 KB Output is correct
3 Correct 4 ms 468 KB Output is correct
4 Correct 25 ms 1748 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 31 ms 1892 KB Output is correct
2 Correct 48 ms 2264 KB Output is correct
3 Correct 8 ms 836 KB Output is correct
4 Correct 29 ms 2276 KB Output is correct

Subtask #6
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 34 ms 1996 KB Output is correct
2 Correct 40 ms 2344 KB Output is correct
3 Correct 33 ms 2432 KB Output is correct
4 Correct 8 ms 852 KB Output is correct

Subtask #7
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 38 ms 2232 KB Output is correct
2 Correct 33 ms 2264 KB Output is correct
3 Correct 35 ms 2644 KB Output is correct
4 Correct 10 ms 852 KB Output is correct

Subtask #8
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 44 ms 2720 KB Output is correct
2 Correct 40 ms 2272 KB Output is correct
3 Correct 17 ms 1808 KB Output is correct
4 Correct 37 ms 2204 KB Output is correct

Subtask #9
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 39 ms 2436 KB Output is correct
2 Correct 50 ms 2588 KB Output is correct
3 Correct 54 ms 2864 KB Output is correct

Subtask #10
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 58 ms 3396 KB Output is correct