oj.uz

Submission #62057

# Submission time Handle Problem Language Result Execution time Memory
62057 2018-07-27T10:45:18 Z gusfring Construction of Highway (JOI18_construction) C++14
100 / 100
 445 ms 51944 KB 
#include <bits/stdc++.h>
 
using namespace std;
 
#define X first
#define Y second
#define mp make_pair
#define pb push_back
 
typedef long long LL;
typedef long double LD;
typedef unsigned int uint;
typedef pair <int, int> pii;
typedef unsigned long long uLL;

const int N = 100005;
 
int n, top, c[N], d[N], f[N], siz[N], sta[N], val[N], chd[N][2];
vector <pii> seq;
LL ans, b[N];
 
bool IsRoot(int x) {
  return chd[f[x]][0] != x && chd[f[x]][1] != x;
}
 
void AddTag(int x, int y) {
  val[x] = c[x] = y;
}
 
void PushUp(int x) {
  siz[x] = siz[chd[x][0]] + siz[chd[x][1]] + 1;
}
 
void PushDown(int x) {
  if (val[x]) {
    AddTag(chd[x][0], val[x]), AddTag(chd[x][1], val[x]), val[x] = 0;
  }
}
 
void Rotate(int x) {
  int y = f[x], z = f[y], k = chd[y][1] == x;
  if (!IsRoot(y)) {
    chd[z][chd[z][1] == y] = x;
  }
  f[chd[y][k] = chd[x][!k]] = y;
  f[f[chd[x][!k] = y] = x] = z;
  PushUp(y), PushUp(x);
}
 
void Splay(int x) {
  sta[top = 1] = x;
  for (int i = x; !IsRoot(i); sta[++top] = i = f[i]);
  for (; top; PushDown(sta[top--]));
  for (int y = f[x], z = f[y]; !IsRoot(x); Rotate(x), y = f[x], z = f[y]) {
    if (!IsRoot(y)) {
      Rotate((chd[y][1] == x) == (chd[z][1] == y) ? y : x);
    }
  }
}
 
void Access(int x) {
  for (int t = 0; x; x = f[x]) {
    Splay(x), chd[x][1] = t, t = x, PushUp(x), seq.pb(mp(c[x], siz[x]));
  }
}
 
void Modify(int x, int y) {
  for (; x <= n; x += x & -x) {
    b[x] += y;
  }
}
 
LL Query(int x) {
  LL r = 0;
  for (; x; x -= x & -x) {
    r += b[x];
  }
  return r;
}
 
void Solve() {
  ans = 0;
  for (int i = seq.size() - 1; i; --i) {
    seq[i].Y -= seq[i - 1].Y;
  }
  for (int i = 0; i < seq.size(); ++i) {
    ans += 1LL * seq[i].Y * Query(seq[i].X - 1);
    Modify(seq[i].X, seq[i].Y);
  }
  printf("%lld\n", ans);
  for (int i = 0; i < seq.size(); ++i) {
    Modify(seq[i].X, -seq[i].Y);
  }
  seq.clear();
}
 
int main() {
  scanf("%d", &n);
  for (int i = 1; i <= n; ++i) {
    scanf("%d", &c[i]); d[i] = c[i], siz[i] = 1;
  }
  sort(d + 1, d + n + 1);
  for (int i = 1; i <= n; ++i) {
    c[i] = lower_bound(d + 1, d + n + 1, c[i]) - d;
  }
  for (int i = 1, x, y; i < n; ++i) {
    scanf("%d %d", &x, &y);
    Access(x), Splay(x);
    AddTag(x, c[y]), f[y] = x, Solve();
  }
  return 0;
}

Compilation message

construction.cpp: In function 'void Solve()':
construction.cpp:86:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int i = 0; i < seq.size(); ++i) {
                   ~~^~~~~~~~~~~~
construction.cpp:91:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int i = 0; i < seq.size(); ++i) {
                   ~~^~~~~~~~~~~~
construction.cpp: In function 'int main()':
construction.cpp:98:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &n);
   ~~~~~^~~~~~~~~~
construction.cpp:100:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &c[i]); d[i] = c[i], siz[i] = 1;
     ~~~~~^~~~~~~~~~~~~
construction.cpp:107:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d", &x, &y);
     ~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 416 KB Output is correct
2 Correct 3 ms 488 KB Output is correct
3 Correct 3 ms 488 KB Output is correct
4 Correct 2 ms 488 KB Output is correct
5 Correct 5 ms 488 KB Output is correct
6 Correct 3 ms 536 KB Output is correct
7 Correct 3 ms 536 KB Output is correct
8 Correct 3 ms 536 KB Output is correct
9 Correct 5 ms 536 KB Output is correct
10 Correct 3 ms 588 KB Output is correct
11 Correct 4 ms 716 KB Output is correct
12 Correct 3 ms 716 KB Output is correct
13 Correct 3 ms 716 KB Output is correct
14 Correct 3 ms 716 KB Output is correct
15 Correct 3 ms 716 KB Output is correct
16 Correct 3 ms 716 KB Output is correct
17 Correct 3 ms 716 KB Output is correct
18 Correct 3 ms 716 KB Output is correct
19 Correct 4 ms 716 KB Output is correct
20 Correct 2 ms 716 KB Output is correct
21 Correct 3 ms 716 KB Output is correct
22 Correct 2 ms 716 KB Output is correct
23 Correct 4 ms 716 KB Output is correct
24 Correct 3 ms 716 KB Output is correct
25 Correct 3 ms 716 KB Output is correct
26 Correct 2 ms 716 KB Output is correct
27 Correct 1 ms 716 KB Output is correct
28 Correct 3 ms 716 KB Output is correct
29 Correct 2 ms 716 KB Output is correct
30 Correct 4 ms 716 KB Output is correct
31 Correct 3 ms 716 KB Output is correct
32 Correct 4 ms 716 KB Output is correct
33 Correct 3 ms 716 KB Output is correct
34 Correct 3 ms 716 KB Output is correct
35 Correct 4 ms 716 KB Output is correct
36 Correct 3 ms 716 KB Output is correct
37 Correct 3 ms 716 KB Output is correct
38 Correct 3 ms 716 KB Output is correct
39 Correct 3 ms 716 KB Output is correct
40 Correct 3 ms 716 KB Output is correct
41 Correct 4 ms 716 KB Output is correct
42 Correct 4 ms 716 KB Output is correct
43 Correct 3 ms 716 KB Output is correct
44 Correct 4 ms 748 KB Output is correct

Subtask #2
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 416 KB Output is correct
2 Correct 3 ms 488 KB Output is correct
3 Correct 3 ms 488 KB Output is correct
4 Correct 2 ms 488 KB Output is correct
5 Correct 5 ms 488 KB Output is correct
6 Correct 3 ms 536 KB Output is correct
7 Correct 3 ms 536 KB Output is correct
8 Correct 3 ms 536 KB Output is correct
9 Correct 5 ms 536 KB Output is correct
10 Correct 3 ms 588 KB Output is correct
11 Correct 4 ms 716 KB Output is correct
12 Correct 3 ms 716 KB Output is correct
13 Correct 3 ms 716 KB Output is correct
14 Correct 3 ms 716 KB Output is correct
15 Correct 3 ms 716 KB Output is correct
16 Correct 3 ms 716 KB Output is correct
17 Correct 3 ms 716 KB Output is correct
18 Correct 3 ms 716 KB Output is correct
19 Correct 4 ms 716 KB Output is correct
20 Correct 2 ms 716 KB Output is correct
21 Correct 3 ms 716 KB Output is correct
22 Correct 2 ms 716 KB Output is correct
23 Correct 4 ms 716 KB Output is correct
24 Correct 3 ms 716 KB Output is correct
25 Correct 3 ms 716 KB Output is correct
26 Correct 2 ms 716 KB Output is correct
27 Correct 1 ms 716 KB Output is correct
28 Correct 3 ms 716 KB Output is correct
29 Correct 2 ms 716 KB Output is correct
30 Correct 4 ms 716 KB Output is correct
31 Correct 3 ms 716 KB Output is correct
32 Correct 4 ms 716 KB Output is correct
33 Correct 3 ms 716 KB Output is correct
34 Correct 3 ms 716 KB Output is correct
35 Correct 4 ms 716 KB Output is correct
36 Correct 3 ms 716 KB Output is correct
37 Correct 3 ms 716 KB Output is correct
38 Correct 3 ms 716 KB Output is correct
39 Correct 3 ms 716 KB Output is correct
40 Correct 3 ms 716 KB Output is correct
41 Correct 4 ms 716 KB Output is correct
42 Correct 4 ms 716 KB Output is correct
43 Correct 3 ms 716 KB Output is correct
44 Correct 4 ms 748 KB Output is correct
45 Correct 4 ms 748 KB Output is correct
46 Correct 10 ms 748 KB Output is correct
47 Correct 10 ms 748 KB Output is correct
48 Correct 9 ms 764 KB Output is correct
49 Correct 7 ms 784 KB Output is correct
50 Correct 6 ms 796 KB Output is correct
51 Correct 10 ms 796 KB Output is correct
52 Correct 7 ms 796 KB Output is correct
53 Correct 6 ms 796 KB Output is correct
54 Correct 6 ms 844 KB Output is correct
55 Correct 7 ms 888 KB Output is correct
56 Correct 8 ms 888 KB Output is correct
57 Correct 11 ms 888 KB Output is correct
58 Correct 10 ms 888 KB Output is correct
59 Correct 12 ms 888 KB Output is correct
60 Correct 12 ms 888 KB Output is correct
61 Correct 10 ms 888 KB Output is correct
62 Correct 9 ms 888 KB Output is correct
63 Correct 9 ms 888 KB Output is correct
64 Correct 7 ms 888 KB Output is correct
65 Correct 7 ms 888 KB Output is correct
66 Correct 10 ms 892 KB Output is correct
67 Correct 7 ms 892 KB Output is correct
68 Correct 7 ms 892 KB Output is correct
69 Correct 6 ms 892 KB Output is correct
70 Correct 6 ms 892 KB Output is correct
71 Correct 8 ms 892 KB Output is correct
72 Correct 12 ms 892 KB Output is correct
73 Correct 12 ms 892 KB Output is correct
74 Correct 10 ms 892 KB Output is correct
75 Correct 7 ms 892 KB Output is correct
76 Correct 6 ms 892 KB Output is correct
77 Correct 6 ms 892 KB Output is correct
78 Correct 6 ms 892 KB Output is correct
79 Correct 7 ms 892 KB Output is correct
80 Correct 6 ms 892 KB Output is correct
81 Correct 9 ms 892 KB Output is correct
82 Correct 10 ms 892 KB Output is correct
83 Correct 9 ms 892 KB Output is correct
84 Correct 7 ms 892 KB Output is correct
85 Correct 8 ms 892 KB Output is correct
86 Correct 7 ms 892 KB Output is correct

Subtask #3
84.0 / 84.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 416 KB Output is correct
2 Correct 3 ms 488 KB Output is correct
3 Correct 3 ms 488 KB Output is correct
4 Correct 2 ms 488 KB Output is correct
5 Correct 5 ms 488 KB Output is correct
6 Correct 3 ms 536 KB Output is correct
7 Correct 3 ms 536 KB Output is correct
8 Correct 3 ms 536 KB Output is correct
9 Correct 5 ms 536 KB Output is correct
10 Correct 3 ms 588 KB Output is correct
11 Correct 4 ms 716 KB Output is correct
12 Correct 3 ms 716 KB Output is correct
13 Correct 3 ms 716 KB Output is correct
14 Correct 3 ms 716 KB Output is correct
15 Correct 3 ms 716 KB Output is correct
16 Correct 3 ms 716 KB Output is correct
17 Correct 3 ms 716 KB Output is correct
18 Correct 3 ms 716 KB Output is correct
19 Correct 4 ms 716 KB Output is correct
20 Correct 2 ms 716 KB Output is correct
21 Correct 3 ms 716 KB Output is correct
22 Correct 2 ms 716 KB Output is correct
23 Correct 4 ms 716 KB Output is correct
24 Correct 3 ms 716 KB Output is correct
25 Correct 3 ms 716 KB Output is correct
26 Correct 2 ms 716 KB Output is correct
27 Correct 1 ms 716 KB Output is correct
28 Correct 3 ms 716 KB Output is correct
29 Correct 2 ms 716 KB Output is correct
30 Correct 4 ms 716 KB Output is correct
31 Correct 3 ms 716 KB Output is correct
32 Correct 4 ms 716 KB Output is correct
33 Correct 3 ms 716 KB Output is correct
34 Correct 3 ms 716 KB Output is correct
35 Correct 4 ms 716 KB Output is correct
36 Correct 3 ms 716 KB Output is correct
37 Correct 3 ms 716 KB Output is correct
38 Correct 3 ms 716 KB Output is correct
39 Correct 3 ms 716 KB Output is correct
40 Correct 3 ms 716 KB Output is correct
41 Correct 4 ms 716 KB Output is correct
42 Correct 4 ms 716 KB Output is correct
43 Correct 3 ms 716 KB Output is correct
44 Correct 4 ms 748 KB Output is correct
45 Correct 4 ms 748 KB Output is correct
46 Correct 10 ms 748 KB Output is correct
47 Correct 10 ms 748 KB Output is correct
48 Correct 9 ms 764 KB Output is correct
49 Correct 7 ms 784 KB Output is correct
50 Correct 6 ms 796 KB Output is correct
51 Correct 10 ms 796 KB Output is correct
52 Correct 7 ms 796 KB Output is correct
53 Correct 6 ms 796 KB Output is correct
54 Correct 6 ms 844 KB Output is correct
55 Correct 7 ms 888 KB Output is correct
56 Correct 8 ms 888 KB Output is correct
57 Correct 11 ms 888 KB Output is correct
58 Correct 10 ms 888 KB Output is correct
59 Correct 12 ms 888 KB Output is correct
60 Correct 12 ms 888 KB Output is correct
61 Correct 10 ms 888 KB Output is correct
62 Correct 9 ms 888 KB Output is correct
63 Correct 9 ms 888 KB Output is correct
64 Correct 7 ms 888 KB Output is correct
65 Correct 7 ms 888 KB Output is correct
66 Correct 10 ms 892 KB Output is correct
67 Correct 7 ms 892 KB Output is correct
68 Correct 7 ms 892 KB Output is correct
69 Correct 6 ms 892 KB Output is correct
70 Correct 6 ms 892 KB Output is correct
71 Correct 8 ms 892 KB Output is correct
72 Correct 12 ms 892 KB Output is correct
73 Correct 12 ms 892 KB Output is correct
74 Correct 10 ms 892 KB Output is correct
75 Correct 7 ms 892 KB Output is correct
76 Correct 6 ms 892 KB Output is correct
77 Correct 6 ms 892 KB Output is correct
78 Correct 6 ms 892 KB Output is correct
79 Correct 7 ms 892 KB Output is correct
80 Correct 6 ms 892 KB Output is correct
81 Correct 9 ms 892 KB Output is correct
82 Correct 10 ms 892 KB Output is correct
83 Correct 9 ms 892 KB Output is correct
84 Correct 7 ms 892 KB Output is correct
85 Correct 8 ms 892 KB Output is correct
86 Correct 7 ms 892 KB Output is correct
87 Correct 24 ms 1036 KB Output is correct
88 Correct 61 ms 1852 KB Output is correct
89 Correct 263 ms 4412 KB Output is correct
90 Correct 273 ms 4540 KB Output is correct
91 Correct 258 ms 4540 KB Output is correct
92 Correct 147 ms 5248 KB Output is correct
93 Correct 181 ms 7440 KB Output is correct
94 Correct 143 ms 9428 KB Output is correct
95 Correct 168 ms 11900 KB Output is correct
96 Correct 182 ms 13988 KB Output is correct
97 Correct 179 ms 16120 KB Output is correct
98 Correct 201 ms 18244 KB Output is correct
99 Correct 167 ms 19980 KB Output is correct
100 Correct 356 ms 21452 KB Output is correct
101 Correct 438 ms 23564 KB Output is correct
102 Correct 412 ms 25756 KB Output is correct
103 Correct 408 ms 27916 KB Output is correct
104 Correct 365 ms 30068 KB Output is correct
105 Correct 332 ms 32140 KB Output is correct
106 Correct 290 ms 34324 KB Output is correct
107 Correct 302 ms 34828 KB Output is correct
108 Correct 241 ms 36804 KB Output is correct
109 Correct 264 ms 38624 KB Output is correct
110 Correct 175 ms 40056 KB Output is correct
111 Correct 132 ms 42480 KB Output is correct
112 Correct 172 ms 43924 KB Output is correct
113 Correct 174 ms 45084 KB Output is correct
114 Correct 445 ms 46668 KB Output is correct
115 Correct 412 ms 48200 KB Output is correct
116 Correct 221 ms 49820 KB Output is correct
117 Correct 147 ms 51492 KB Output is correct
118 Correct 189 ms 51732 KB Output is correct
119 Correct 200 ms 51812 KB Output is correct
120 Correct 186 ms 51812 KB Output is correct
121 Correct 163 ms 51840 KB Output is correct
122 Correct 177 ms 51840 KB Output is correct
123 Correct 328 ms 51904 KB Output is correct
124 Correct 339 ms 51940 KB Output is correct
125 Correct 353 ms 51944 KB Output is correct
126 Correct 293 ms 51944 KB Output is correct
127 Correct 279 ms 51944 KB Output is correct
128 Correct 267 ms 51944 KB Output is correct