oj.uz

답안 #261216

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
261216 2020-08-11T14:44:06 Z Bruteforceman Examination (JOI19_examination) C++11
2 / 100
 63 ms 5360 KB 
#include <bits/stdc++.h>
using namespace std;
const int maxn = 1e5 + 10;
struct info {
  int x, y, z;
  int id;
  info (int x, int y, int z) : x(x), y(y), z(z) {}
  info () {}
  bool operator < (info d) const {
    if(z == d.z) {
      return id < d.id;
    } 
    return z > d.z;
  }
} a[maxn];
int n, idx;
int ans[maxn];
int t[maxn];
void update(int x, int val) {
  for(int i = x; i <= idx; i += i & (-i)) t[i] += val;
}
int query(int x) {
  int sum = 0;
  for(int i = x; i > 0; i -= i & (-i)) {
    sum += t[i];
  }
  return sum;
}
void solve(int l, int r) {
  if(l == r) return ;
  int m = (l + r) >> 1;
  solve(l, m);
  solve(m + 1, r);
  vector <int> cont;
  for(int i = l; i <= m; i++) {
    if(a[i].id <= n) cont.emplace_back(i);
  }
  for(int i = m + 1; i <= r; i++) {
    if(a[i].id > n) cont.emplace_back(i);
  }
  sort(cont.begin(), cont.end(), 
    [&] (int i, int j) {
      if(a[i].y == a[j].y) return i < j;
      else return a[i].y > a[j].y; 
    }
  );
  for(auto i : cont) {
    if(a[i].id <= n) {
      update(a[i].x, 1);
    } else {
      ans[a[i].id] += query(idx) - query(a[i].x - 1);
    } 
  }
  for(auto i : cont) {
    if(a[i].id <= n) {
      update(a[i].x, -1);
    }
  }
}

int main() {
  int q;
  scanf("%d %d", &n, &q);
  map <int, int> cmp;
  vector <int> v;
  cmp[INT_MAX];
  v.push_back(INT_MAX);
  for(int i = 1; i <= n; i++) {
    scanf("%d %d", &a[i].x, &a[i].y);
    a[i].z = a[i].x + a[i].y;
    a[i].id = i;
    cmp[a[i].x];
    v.push_back(a[i].x);
  }
  for(int i = n + 1; i <= n + q; i++) {
    scanf("%d %d %d", &a[i].x, &a[i].y, &a[i].z);
    a[i].id = i;
  }
  sort(a + 1, a + n + q + 1);
  idx = 0;
  for(auto &i : cmp) {
    i.second = ++idx;
  }
  sort(v.begin(), v.end());
  for(int i = 1; i <= n + q; i++) {
    if(a[i].id <= n) {
      a[i].x = cmp[a[i].x]; 
    } else {
      a[i].x = cmp[*lower_bound(v.begin(), v.end(), a[i].x)];  
    }
  } 
  solve(1, n + q);
  for(int i = 1; i <= q; i++) printf("%d\n", ans[i + n]);
  return 0;
}

Compilation message

examination.cpp: In function 'int main()':
examination.cpp:63:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d", &n, &q);
   ~~~~~^~~~~~~~~~~~~~~~~
examination.cpp:69:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d", &a[i].x, &a[i].y);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
examination.cpp:76:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d %d", &a[i].x, &a[i].y, &a[i].z);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
2.0 / 2.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 11 ms 768 KB Output is correct
8 Correct 11 ms 768 KB Output is correct
9 Correct 13 ms 896 KB Output is correct
10 Correct 10 ms 768 KB Output is correct
11 Correct 8 ms 640 KB Output is correct
12 Correct 7 ms 512 KB Output is correct
13 Correct 10 ms 768 KB Output is correct
14 Correct 10 ms 768 KB Output is correct
15 Correct 10 ms 768 KB Output is correct
16 Correct 6 ms 640 KB Output is correct
17 Correct 9 ms 768 KB Output is correct
18 Correct 6 ms 512 KB Output is correct

Subtask #2
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 63 ms 5360 KB Time limit exceeded (wall clock)
2 Halted 0 ms 0 KB -

Subtask #3
0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 63 ms 5360 KB Time limit exceeded (wall clock)
2 Halted 0 ms 0 KB -

Subtask #4
0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 11 ms 768 KB Output is correct
8 Correct 11 ms 768 KB Output is correct
9 Correct 13 ms 896 KB Output is correct
10 Correct 10 ms 768 KB Output is correct
11 Correct 8 ms 640 KB Output is correct
12 Correct 7 ms 512 KB Output is correct
13 Correct 10 ms 768 KB Output is correct
14 Correct 10 ms 768 KB Output is correct
15 Correct 10 ms 768 KB Output is correct
16 Correct 6 ms 640 KB Output is correct
17 Correct 9 ms 768 KB Output is correct
18 Correct 6 ms 512 KB Output is correct
19 Execution timed out 63 ms 5360 KB Time limit exceeded (wall clock)
20 Halted 0 ms 0 KB -