oj.uz

답안 #485268

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
485268 2021-11-06T21:36:44 Z MilosMilutinovic Pinball (JOI14_pinball) C++14
51 / 100
 242 ms 12676 KB 
/**
 *    author: m371
 *    created: 06.11.2021 22:12:33
**/
#include <bits/stdc++.h>

using namespace std;

const int N = 1e5 + 5;
const int MAX = 4 * N;

const long long inf = 1e17;

long long st[MAX];

void build(int x, int l, int r) {
  st[x] = inf;
  if (l == r) return;
  int mid = l + r >> 1;
  build(x + x, l, mid);
  build(x + x + 1, mid + 1, r);
}

void modify(int x, int l, int r, int pos, long long val) {
  if (l == r) {
    st[x] = min(st[x], val);
    return;
  }
  int mid = l + r >> 1;
  if (pos <= mid) {
    modify(x + x, l, mid, pos, val);
  } else {
    modify(x + x + 1, mid + 1, r, pos, val);
  }
  st[x] = min(st[x + x], st[x + x + 1]);
}

long long get(int x, int l, int r, int ll, int rr) {
  if (l > r || l > rr || r < ll) return inf;
  if (ll <= l && r <= rr) return st[x];
  int mid = l + r >> 1;
  return min(get(x + x, l, mid, ll, rr), get(x + x + 1, mid + 1, r, ll, rr));
} 

int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  int n, m;
  cin >> n >> m;
  vector<int> a(n), b(n), c(n), cost(n);
  for (int i = 0; i < n; i++) {
    cin >> a[i] >> b[i] >> c[i] >> cost[i];
  }
  vector<int> cs;
  cs.push_back(1);
  cs.push_back(m);
  for (int i = 0; i < n; i++) {
    cs.push_back(a[i]);
    cs.push_back(b[i]);
    cs.push_back(c[i]);
  }
  sort(cs.begin(), cs.end());
  cs.erase(unique(cs.begin(), cs.end()), cs.end());
  map<int, int> val;
  for (int i = 0; i < cs.size(); i++) {
    val[cs[i]] = i;
  }
  build(1, 0, N);
  modify(1, 0, N, val[1], 0);
  vector<long long> L(n), R(n);
  for (int i = 0; i < n; i++) {
    L[i] = get(1, 0, N, val[a[i]], val[b[i]]);
    modify(1, 0, N, val[c[i]], L[i] + cost[i]);
  }
  build(1, 0, N);
  modify(1, 0, N, val[m], 0);
  for (int i = 0; i < n; i++) {
    R[i] = get(1, 0, N, val[a[i]], val[b[i]]);
    modify(1, 0, N, val[c[i]], R[i] + cost[i]);
  }
  long long ans = inf;
  for (int i = 0; i < n; i++) {
    ans = min(ans, L[i] + R[i] + cost[i]);
  }
  cout << (ans == inf ? -1 : ans) << '\n';
  return 0;
}

Compilation message

pinball.cpp: In function 'void build(int, int, int)':
pinball.cpp:19:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   19 |   int mid = l + r >> 1;
      |             ~~^~~
pinball.cpp: In function 'void modify(int, int, int, int, long long int)':
pinball.cpp:29:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   29 |   int mid = l + r >> 1;
      |             ~~^~~
pinball.cpp: In function 'long long int get(int, int, int, int, int)':
pinball.cpp:41:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   41 |   int mid = l + r >> 1;
      |             ~~^~~
pinball.cpp: In function 'int main()':
pinball.cpp:65:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   65 |   for (int i = 0; i < cs.size(); i++) {
      |                   ~~^~~~~~~~~~~

Subtask #1
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 2252 KB Output is correct
2 Correct 2 ms 2252 KB Output is correct
3 Correct 2 ms 2252 KB Output is correct
4 Correct 2 ms 2252 KB Output is correct
5 Correct 2 ms 2252 KB Output is correct
6 Correct 2 ms 2252 KB Output is correct
7 Correct 2 ms 2252 KB Output is correct
8 Correct 2 ms 2252 KB Output is correct

Subtask #2
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 2252 KB Output is correct
2 Correct 2 ms 2252 KB Output is correct
3 Correct 2 ms 2252 KB Output is correct
4 Correct 2 ms 2252 KB Output is correct
5 Correct 2 ms 2252 KB Output is correct
6 Correct 2 ms 2252 KB Output is correct
7 Correct 2 ms 2252 KB Output is correct
8 Correct 2 ms 2252 KB Output is correct
9 Correct 2 ms 2380 KB Output is correct
10 Correct 2 ms 2380 KB Output is correct
11 Correct 2 ms 2380 KB Output is correct
12 Correct 2 ms 2380 KB Output is correct
13 Correct 2 ms 2380 KB Output is correct
14 Correct 2 ms 2380 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 2252 KB Output is correct
2 Correct 2 ms 2252 KB Output is correct
3 Correct 2 ms 2252 KB Output is correct
4 Correct 2 ms 2252 KB Output is correct
5 Correct 2 ms 2252 KB Output is correct
6 Correct 2 ms 2252 KB Output is correct
7 Correct 2 ms 2252 KB Output is correct
8 Correct 2 ms 2252 KB Output is correct
9 Correct 2 ms 2380 KB Output is correct
10 Correct 2 ms 2380 KB Output is correct
11 Correct 2 ms 2380 KB Output is correct
12 Correct 2 ms 2380 KB Output is correct
13 Correct 2 ms 2380 KB Output is correct
14 Correct 2 ms 2380 KB Output is correct
15 Correct 2 ms 2364 KB Output is correct
16 Correct 2 ms 2376 KB Output is correct
17 Correct 4 ms 2508 KB Output is correct
18 Correct 3 ms 2380 KB Output is correct
19 Correct 4 ms 2508 KB Output is correct
20 Correct 4 ms 2508 KB Output is correct
21 Correct 2 ms 2380 KB Output is correct
22 Correct 4 ms 2508 KB Output is correct
23 Correct 5 ms 2508 KB Output is correct
24 Correct 3 ms 2508 KB Output is correct

Subtask #4
0 / 49.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 2252 KB Output is correct
2 Correct 2 ms 2252 KB Output is correct
3 Correct 2 ms 2252 KB Output is correct
4 Correct 2 ms 2252 KB Output is correct
5 Correct 2 ms 2252 KB Output is correct
6 Correct 2 ms 2252 KB Output is correct
7 Correct 2 ms 2252 KB Output is correct
8 Correct 2 ms 2252 KB Output is correct
9 Correct 2 ms 2380 KB Output is correct
10 Correct 2 ms 2380 KB Output is correct
11 Correct 2 ms 2380 KB Output is correct
12 Correct 2 ms 2380 KB Output is correct
13 Correct 2 ms 2380 KB Output is correct
14 Correct 2 ms 2380 KB Output is correct
15 Correct 2 ms 2364 KB Output is correct
16 Correct 2 ms 2376 KB Output is correct
17 Correct 4 ms 2508 KB Output is correct
18 Correct 3 ms 2380 KB Output is correct
19 Correct 4 ms 2508 KB Output is correct
20 Correct 4 ms 2508 KB Output is correct
21 Correct 2 ms 2380 KB Output is correct
22 Correct 4 ms 2508 KB Output is correct
23 Correct 5 ms 2508 KB Output is correct
24 Correct 3 ms 2508 KB Output is correct
25 Correct 26 ms 3788 KB Output is correct
26 Correct 98 ms 6956 KB Output is correct
27 Incorrect 242 ms 12676 KB Output isn't correct
28 Halted 0 ms 0 KB -