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Submission #111185

# Submission time Handle Problem Language Result Execution time Memory
111185 2019-05-14T03:49:37 Z oToToT Palembang Bridges (APIO15_bridge) C++14
100 / 100
 100 ms 2808 KB 
#include <cstdio>
#include <algorithm>
#include <functional>

using namespace std;

const greater<int> gr;

struct Median {
  int sz;
  int mn[100007];
  int mx[100007];
  void clear() { sz = 0; }
  long long insert(int a, int b, long long d) { // a <= b
    if (!sz) return sz++, d + (*mx = b) - (*mn = a);
    if (b < *mn) {
      d += *mn * 2 - a - b;
      mx[sz] = *mn;
      pop_heap(mn, mn + sz);
      mn[sz - 1] = a; mn[sz] = b;
      push_heap(mn, mn + sz);
    } else if (a > *mx) {
      d += a + b - *mx * 2;
      mn[sz] = *mx;
      pop_heap(mx, mx + sz, gr);
      mx[sz - 1] = a; mx[sz] = b;
      push_heap(mx, mx + sz, gr);
    } else {
      d += b - a;
      mn[sz] = a; mx[sz] = b;
    }
    push_heap(mn, mn + ++sz);
    push_heap(mx, mx + sz, gr);
    return d;
  }
} med;

struct Point {
  int a, b;
  bool operator<(const Point& pt) const { return a + b < pt.a + pt.b; }
} pt[100003];

int g[200003];
long long ansl[100003];

int main() {
  int K, N;
  scanf("%d%d", &K, &N);
  char ca[3], cb[3];
  if (K == 1) {
    int a, b, tN = 0;
    long long ans = 0;
    for (int i = 0; i < N; i++) {
      scanf("%s%d%s%d", ca, &a, cb, &b);
      if (*ca == *cb) ans += abs(b - a);
      else g[tN++] = a, g[tN++] = b, ans++;
    }
    nth_element(g, g + (tN / 2), g + tN);
    for (int i = 0; i < tN / 2; i++) ans += g[tN / 2] - g[i];
    for (int i = tN / 2; i < tN; i++) ans += g[i] - g[tN / 2];
    printf("%lld", ans);
    return 0;
  }

  int tN = 0;
  long long pre = 0;
  for (int i = 0; i < N; i++) {
    auto& z = pt[tN];
    scanf("%s%d%s%d", ca, &z.a, cb, &z.b);
    if (z.a > z.b) swap(z.a, z.b);
    if (*ca == *cb) pre += z.b - z.a;
    else pre++, tN++;
  }

  if (tN) {
    sort(pt, pt + tN);
    med.clear();
    for (int i = 0; i < tN; i++) ansl[i + 1] = med.insert(pt[i].a, pt[i].b, ansl[i]);

    long long ans = ansl[tN], now = 0;
    med.clear();
    for (int i = tN - 1; i >= 0; i--) {
      now = med.insert(pt[i].a, pt[i].b, now);
      if (now + ansl[i] < ans) ans = now + ansl[i];
    }
    printf("%lld", ans + pre);
  } else printf("%lld", pre);
}

Compilation message

bridge.cpp: In function 'int main()':
bridge.cpp:48:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d", &K, &N);
   ~~~~~^~~~~~~~~~~~~~~~
bridge.cpp:54:12: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
       scanf("%s%d%s%d", ca, &a, cb, &b);
       ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
bridge.cpp:69:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%s%d%s%d", ca, &z.a, cb, &z.b);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 3 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 2 ms 256 KB Output is correct
8 Correct 2 ms 256 KB Output is correct
9 Correct 2 ms 256 KB Output is correct
10 Correct 3 ms 256 KB Output is correct
11 Correct 3 ms 384 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 320 KB Output is correct
3 Correct 3 ms 256 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 3 ms 384 KB Output is correct
8 Correct 3 ms 256 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 3 ms 384 KB Output is correct
12 Correct 26 ms 1152 KB Output is correct
13 Correct 46 ms 1144 KB Output is correct
14 Correct 31 ms 1024 KB Output is correct
15 Correct 27 ms 768 KB Output is correct
16 Correct 32 ms 1024 KB Output is correct
17 Correct 56 ms 1016 KB Output is correct
18 Correct 38 ms 1016 KB Output is correct
19 Correct 44 ms 1144 KB Output is correct
20 Correct 37 ms 1124 KB Output is correct
21 Correct 48 ms 1016 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 3 ms 256 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 2 ms 256 KB Output is correct
9 Correct 2 ms 256 KB Output is correct
10 Correct 2 ms 384 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 2 ms 256 KB Output is correct

Subtask #4
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 3 ms 256 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 2 ms 256 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 3 ms 256 KB Output is correct
10 Correct 2 ms 384 KB Output is correct
11 Correct 2 ms 256 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 2 ms 384 KB Output is correct
14 Correct 2 ms 384 KB Output is correct
15 Correct 3 ms 384 KB Output is correct
16 Correct 2 ms 256 KB Output is correct
17 Correct 2 ms 384 KB Output is correct
18 Correct 3 ms 384 KB Output is correct
19 Correct 3 ms 384 KB Output is correct
20 Correct 4 ms 384 KB Output is correct
21 Correct 3 ms 384 KB Output is correct
22 Correct 2 ms 384 KB Output is correct
23 Correct 2 ms 384 KB Output is correct
24 Correct 5 ms 384 KB Output is correct

Subtask #5
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 3 ms 384 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 2 ms 256 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 2 ms 256 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 3 ms 384 KB Output is correct
14 Correct 3 ms 384 KB Output is correct
15 Correct 2 ms 384 KB Output is correct
16 Correct 2 ms 384 KB Output is correct
17 Correct 2 ms 256 KB Output is correct
18 Correct 2 ms 256 KB Output is correct
19 Correct 3 ms 384 KB Output is correct
20 Correct 4 ms 384 KB Output is correct
21 Correct 2 ms 384 KB Output is correct
22 Correct 3 ms 384 KB Output is correct
23 Correct 2 ms 384 KB Output is correct
24 Correct 3 ms 384 KB Output is correct
25 Correct 38 ms 2680 KB Output is correct
26 Correct 54 ms 2808 KB Output is correct
27 Correct 100 ms 2680 KB Output is correct
28 Correct 74 ms 2680 KB Output is correct
29 Correct 75 ms 2680 KB Output is correct
30 Correct 53 ms 1528 KB Output is correct
31 Correct 62 ms 2680 KB Output is correct
32 Correct 92 ms 2680 KB Output is correct
33 Correct 45 ms 2652 KB Output is correct
34 Correct 76 ms 2808 KB Output is correct
35 Correct 46 ms 2680 KB Output is correct
36 Correct 68 ms 2652 KB Output is correct
37 Correct 28 ms 2680 KB Output is correct