oj.uz

Submission #154515

# Submission time Handle Problem Language Result Execution time Memory
154515 2019-09-22T11:47:57 Z karma Construction of Highway (JOI18_construction) C++14
100 / 100
 532 ms 107364 KB 
#include<bits/stdc++.h>
#define Task     "test"
#define ll       long long
#define pb       emplace_back
#define mp       make_pair
#define fi       first
#define se       second

using namespace std;

const int N = int(1e5) + 2;
typedef pair<int, int> pii;

int sz[N], head[N], ind[N], pos[N], nChain = 0, nBase = 0;
int n, _a[N], _b[N], c[N], t[N], p[N], bitsz;
vector<int> a[N];
deque<pii> dq[N];

void DFS(int u) {
    sz[u] = 1;
    for(int v: a[u]) DFS(v), sz[u] += sz[v];
}

void HLD(int u) {
     if(!head[nChain]) head[nChain] = u;
     ind[u] = nChain, pos[u] = ++nBase;
     int big = 0;
     for(int v: a[u])
        if(sz[big] < sz[v]) big = v;
     if(big) HLD(big);
     for(int v: a[u]) {
        if(v != big) ++nChain, HLD(v);
     }
}

void Rs(int n) {bitsz = n; fill(t, t + bitsz + 1, 0);}
void Update(int x, int val) {for(; x <= bitsz; x += (x & -x)) t[x] += val;}
int Get(int x) {int res = 0; for(; x > 0; x -= (x & -x)) res += t[x]; return res;}

ll Solve(int par, int u) {
   ll res = 0;
   // Count par
   int uch = ind[par], cnt;
   vector<pii> val, tmp;
   vector<int> idx;
   while(1) {
       cnt = pos[par] - pos[head[uch]] + 1;
       tmp.clear();
       for(int i = 0; i < dq[uch].size(); ++i) {
          if(dq[uch][i].se <= cnt) {
             tmp.pb(dq[uch][i]);
             cnt -= dq[uch][i].se;
          } else {
             tmp.pb(dq[uch][i].fi, cnt);
             break;
          }
       }
       for(int i = int(tmp.size()) - 1; i >= 0; --i) idx.pb(tmp[i].fi), val.pb(tmp[i]);
       if(!uch) break;
       par = p[head[uch]], uch = ind[par];
   }
   sort(idx.begin(), idx.end());
   idx.erase(unique(idx.begin(), idx.end()), idx.end());
   reverse(val.begin(), val.end());
   int cur = 0; Rs(idx.size());
   for(pii p: val) {
      p.fi = lower_bound(idx.begin(), idx.end(), p.fi) - idx.begin() + 1;
      res += 1ll * p.se * (cur - Get(p.fi));
      cur += p.se, Update(p.fi, p.se);
   }
   // Update u
   uch = ind[u]; cur = c[u];
   while(1) {
       cnt = pos[u] - pos[head[uch]] + 1;
       while(dq[uch].size() && cnt) {
          if(dq[uch][0].se <= cnt) {
             cnt -= dq[uch][0].se;
             dq[uch].pop_front();
          } else {
             dq[uch][0].se -= cnt;
             break;
          }
       }
       dq[uch].push_front(mp(cur, pos[u] - pos[head[uch]] + 1));
       if(!uch) break;
       u = p[head[uch]], uch = ind[u];
   }
   return res;
}

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0), cout.tie(0);
    if(fopen(Task".inp", "r")) {
        freopen(Task".inp", "r", stdin);
        freopen(Task".out", "w", stdout);
    }
    cin >> n;
    for(int i = 1; i <= n; ++i) cin >> c[i];
    for(int i = 1; i < n; ++i) {
        cin >> _a[i] >> _b[i];
        a[_a[i]].pb(_b[i]);
        p[_b[i]] = _a[i];
    }
    DFS(1); HLD(1);
    for(int i = 1; i < n; ++i) cout << Solve(_a[i], _b[i]) << '\n';
}

Compilation message

construction.cpp: In function 'long long int Solve(int, int)':
construction.cpp:49:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
        for(int i = 0; i < dq[uch].size(); ++i) {
                       ~~^~~~~~~~~~~~~~~~
construction.cpp: In function 'int main()':
construction.cpp:95:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
         freopen(Task".inp", "r", stdin);
         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
construction.cpp:96:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
         freopen(Task".out", "w", stdout);
         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 82 ms 70264 KB Output is correct
2 Correct 74 ms 70264 KB Output is correct
3 Correct 79 ms 70084 KB Output is correct
4 Correct 81 ms 70176 KB Output is correct
5 Correct 80 ms 70256 KB Output is correct
6 Correct 79 ms 70140 KB Output is correct
7 Correct 81 ms 70264 KB Output is correct
8 Correct 76 ms 70088 KB Output is correct
9 Correct 74 ms 70140 KB Output is correct
10 Correct 75 ms 70264 KB Output is correct
11 Correct 81 ms 70264 KB Output is correct
12 Correct 80 ms 70352 KB Output is correct
13 Correct 81 ms 70264 KB Output is correct
14 Correct 78 ms 70140 KB Output is correct
15 Correct 81 ms 70264 KB Output is correct
16 Correct 80 ms 70136 KB Output is correct
17 Correct 83 ms 70268 KB Output is correct
18 Correct 80 ms 70264 KB Output is correct
19 Correct 80 ms 70264 KB Output is correct
20 Correct 81 ms 70264 KB Output is correct
21 Correct 80 ms 70264 KB Output is correct
22 Correct 80 ms 70264 KB Output is correct
23 Correct 79 ms 70256 KB Output is correct
24 Correct 79 ms 70188 KB Output is correct
25 Correct 81 ms 70136 KB Output is correct
26 Correct 74 ms 70136 KB Output is correct
27 Correct 84 ms 70348 KB Output is correct
28 Correct 81 ms 70244 KB Output is correct
29 Correct 89 ms 70344 KB Output is correct
30 Correct 89 ms 70256 KB Output is correct
31 Correct 98 ms 70392 KB Output is correct
32 Correct 85 ms 70396 KB Output is correct
33 Correct 79 ms 70136 KB Output is correct
34 Correct 89 ms 70244 KB Output is correct
35 Correct 99 ms 70136 KB Output is correct
36 Correct 79 ms 70288 KB Output is correct
37 Correct 79 ms 70140 KB Output is correct
38 Correct 80 ms 70136 KB Output is correct
39 Correct 78 ms 70136 KB Output is correct
40 Correct 79 ms 70252 KB Output is correct
41 Correct 80 ms 70272 KB Output is correct
42 Correct 80 ms 70252 KB Output is correct
43 Correct 98 ms 70140 KB Output is correct
44 Correct 84 ms 70212 KB Output is correct

Subtask #2
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 82 ms 70264 KB Output is correct
2 Correct 74 ms 70264 KB Output is correct
3 Correct 79 ms 70084 KB Output is correct
4 Correct 81 ms 70176 KB Output is correct
5 Correct 80 ms 70256 KB Output is correct
6 Correct 79 ms 70140 KB Output is correct
7 Correct 81 ms 70264 KB Output is correct
8 Correct 76 ms 70088 KB Output is correct
9 Correct 74 ms 70140 KB Output is correct
10 Correct 75 ms 70264 KB Output is correct
11 Correct 81 ms 70264 KB Output is correct
12 Correct 80 ms 70352 KB Output is correct
13 Correct 81 ms 70264 KB Output is correct
14 Correct 78 ms 70140 KB Output is correct
15 Correct 81 ms 70264 KB Output is correct
16 Correct 80 ms 70136 KB Output is correct
17 Correct 83 ms 70268 KB Output is correct
18 Correct 80 ms 70264 KB Output is correct
19 Correct 80 ms 70264 KB Output is correct
20 Correct 81 ms 70264 KB Output is correct
21 Correct 80 ms 70264 KB Output is correct
22 Correct 80 ms 70264 KB Output is correct
23 Correct 79 ms 70256 KB Output is correct
24 Correct 79 ms 70188 KB Output is correct
25 Correct 81 ms 70136 KB Output is correct
26 Correct 74 ms 70136 KB Output is correct
27 Correct 84 ms 70348 KB Output is correct
28 Correct 81 ms 70244 KB Output is correct
29 Correct 89 ms 70344 KB Output is correct
30 Correct 89 ms 70256 KB Output is correct
31 Correct 98 ms 70392 KB Output is correct
32 Correct 85 ms 70396 KB Output is correct
33 Correct 79 ms 70136 KB Output is correct
34 Correct 89 ms 70244 KB Output is correct
35 Correct 99 ms 70136 KB Output is correct
36 Correct 79 ms 70288 KB Output is correct
37 Correct 79 ms 70140 KB Output is correct
38 Correct 80 ms 70136 KB Output is correct
39 Correct 78 ms 70136 KB Output is correct
40 Correct 79 ms 70252 KB Output is correct
41 Correct 80 ms 70272 KB Output is correct
42 Correct 80 ms 70252 KB Output is correct
43 Correct 98 ms 70140 KB Output is correct
44 Correct 84 ms 70212 KB Output is correct
45 Correct 80 ms 70392 KB Output is correct
46 Correct 88 ms 71416 KB Output is correct
47 Correct 96 ms 71416 KB Output is correct
48 Correct 102 ms 71472 KB Output is correct
49 Correct 78 ms 70520 KB Output is correct
50 Correct 77 ms 70520 KB Output is correct
51 Correct 78 ms 70620 KB Output is correct
52 Correct 83 ms 71544 KB Output is correct
53 Correct 86 ms 71560 KB Output is correct
54 Correct 84 ms 71520 KB Output is correct
55 Correct 83 ms 71544 KB Output is correct
56 Correct 84 ms 71448 KB Output is correct
57 Correct 88 ms 71416 KB Output is correct
58 Correct 98 ms 71372 KB Output is correct
59 Correct 108 ms 71288 KB Output is correct
60 Correct 90 ms 71292 KB Output is correct
61 Correct 93 ms 71544 KB Output is correct
62 Correct 105 ms 71416 KB Output is correct
63 Correct 83 ms 71416 KB Output is correct
64 Correct 85 ms 71312 KB Output is correct
65 Correct 95 ms 71396 KB Output is correct
66 Correct 88 ms 71416 KB Output is correct
67 Correct 99 ms 71384 KB Output is correct
68 Correct 77 ms 70520 KB Output is correct
69 Correct 84 ms 71416 KB Output is correct
70 Correct 83 ms 71484 KB Output is correct
71 Correct 84 ms 71356 KB Output is correct
72 Correct 87 ms 71296 KB Output is correct
73 Correct 96 ms 71416 KB Output is correct
74 Correct 84 ms 71508 KB Output is correct
75 Correct 83 ms 71416 KB Output is correct
76 Correct 85 ms 71388 KB Output is correct
77 Correct 85 ms 71416 KB Output is correct
78 Correct 85 ms 71408 KB Output is correct
79 Correct 84 ms 71444 KB Output is correct
80 Correct 84 ms 71288 KB Output is correct
81 Correct 83 ms 71416 KB Output is correct
82 Correct 84 ms 71416 KB Output is correct
83 Correct 85 ms 71460 KB Output is correct
84 Correct 84 ms 71352 KB Output is correct
85 Correct 86 ms 71408 KB Output is correct
86 Correct 85 ms 71348 KB Output is correct

Subtask #3
84.0 / 84.0

# Verdict Execution time Memory Grader output
1 Correct 82 ms 70264 KB Output is correct
2 Correct 74 ms 70264 KB Output is correct
3 Correct 79 ms 70084 KB Output is correct
4 Correct 81 ms 70176 KB Output is correct
5 Correct 80 ms 70256 KB Output is correct
6 Correct 79 ms 70140 KB Output is correct
7 Correct 81 ms 70264 KB Output is correct
8 Correct 76 ms 70088 KB Output is correct
9 Correct 74 ms 70140 KB Output is correct
10 Correct 75 ms 70264 KB Output is correct
11 Correct 81 ms 70264 KB Output is correct
12 Correct 80 ms 70352 KB Output is correct
13 Correct 81 ms 70264 KB Output is correct
14 Correct 78 ms 70140 KB Output is correct
15 Correct 81 ms 70264 KB Output is correct
16 Correct 80 ms 70136 KB Output is correct
17 Correct 83 ms 70268 KB Output is correct
18 Correct 80 ms 70264 KB Output is correct
19 Correct 80 ms 70264 KB Output is correct
20 Correct 81 ms 70264 KB Output is correct
21 Correct 80 ms 70264 KB Output is correct
22 Correct 80 ms 70264 KB Output is correct
23 Correct 79 ms 70256 KB Output is correct
24 Correct 79 ms 70188 KB Output is correct
25 Correct 81 ms 70136 KB Output is correct
26 Correct 74 ms 70136 KB Output is correct
27 Correct 84 ms 70348 KB Output is correct
28 Correct 81 ms 70244 KB Output is correct
29 Correct 89 ms 70344 KB Output is correct
30 Correct 89 ms 70256 KB Output is correct
31 Correct 98 ms 70392 KB Output is correct
32 Correct 85 ms 70396 KB Output is correct
33 Correct 79 ms 70136 KB Output is correct
34 Correct 89 ms 70244 KB Output is correct
35 Correct 99 ms 70136 KB Output is correct
36 Correct 79 ms 70288 KB Output is correct
37 Correct 79 ms 70140 KB Output is correct
38 Correct 80 ms 70136 KB Output is correct
39 Correct 78 ms 70136 KB Output is correct
40 Correct 79 ms 70252 KB Output is correct
41 Correct 80 ms 70272 KB Output is correct
42 Correct 80 ms 70252 KB Output is correct
43 Correct 98 ms 70140 KB Output is correct
44 Correct 84 ms 70212 KB Output is correct
45 Correct 80 ms 70392 KB Output is correct
46 Correct 88 ms 71416 KB Output is correct
47 Correct 96 ms 71416 KB Output is correct
48 Correct 102 ms 71472 KB Output is correct
49 Correct 78 ms 70520 KB Output is correct
50 Correct 77 ms 70520 KB Output is correct
51 Correct 78 ms 70620 KB Output is correct
52 Correct 83 ms 71544 KB Output is correct
53 Correct 86 ms 71560 KB Output is correct
54 Correct 84 ms 71520 KB Output is correct
55 Correct 83 ms 71544 KB Output is correct
56 Correct 84 ms 71448 KB Output is correct
57 Correct 88 ms 71416 KB Output is correct
58 Correct 98 ms 71372 KB Output is correct
59 Correct 108 ms 71288 KB Output is correct
60 Correct 90 ms 71292 KB Output is correct
61 Correct 93 ms 71544 KB Output is correct
62 Correct 105 ms 71416 KB Output is correct
63 Correct 83 ms 71416 KB Output is correct
64 Correct 85 ms 71312 KB Output is correct
65 Correct 95 ms 71396 KB Output is correct
66 Correct 88 ms 71416 KB Output is correct
67 Correct 99 ms 71384 KB Output is correct
68 Correct 77 ms 70520 KB Output is correct
69 Correct 84 ms 71416 KB Output is correct
70 Correct 83 ms 71484 KB Output is correct
71 Correct 84 ms 71356 KB Output is correct
72 Correct 87 ms 71296 KB Output is correct
73 Correct 96 ms 71416 KB Output is correct
74 Correct 84 ms 71508 KB Output is correct
75 Correct 83 ms 71416 KB Output is correct
76 Correct 85 ms 71388 KB Output is correct
77 Correct 85 ms 71416 KB Output is correct
78 Correct 85 ms 71408 KB Output is correct
79 Correct 84 ms 71444 KB Output is correct
80 Correct 84 ms 71288 KB Output is correct
81 Correct 83 ms 71416 KB Output is correct
82 Correct 84 ms 71416 KB Output is correct
83 Correct 85 ms 71460 KB Output is correct
84 Correct 84 ms 71352 KB Output is correct
85 Correct 86 ms 71408 KB Output is correct
86 Correct 85 ms 71348 KB Output is correct
87 Correct 103 ms 73380 KB Output is correct
88 Correct 164 ms 79952 KB Output is correct
89 Correct 426 ms 103068 KB Output is correct
90 Correct 442 ms 102764 KB Output is correct
91 Correct 417 ms 102884 KB Output is correct
92 Correct 183 ms 82808 KB Output is correct
93 Correct 180 ms 82900 KB Output is correct
94 Correct 187 ms 82888 KB Output is correct
95 Correct 229 ms 106996 KB Output is correct
96 Correct 271 ms 107244 KB Output is correct
97 Correct 246 ms 107364 KB Output is correct
98 Correct 237 ms 107180 KB Output is correct
99 Correct 262 ms 105228 KB Output is correct
100 Correct 449 ms 95004 KB Output is correct
101 Correct 532 ms 95224 KB Output is correct
102 Correct 527 ms 95188 KB Output is correct
103 Correct 520 ms 95224 KB Output is correct
104 Correct 309 ms 105080 KB Output is correct
105 Correct 312 ms 105080 KB Output is correct
106 Correct 251 ms 105216 KB Output is correct
107 Correct 384 ms 101956 KB Output is correct
108 Correct 407 ms 102232 KB Output is correct
109 Correct 420 ms 102452 KB Output is correct
110 Correct 184 ms 82332 KB Output is correct
111 Correct 232 ms 106864 KB Output is correct
112 Correct 258 ms 106356 KB Output is correct
113 Correct 263 ms 104696 KB Output is correct
114 Correct 450 ms 95056 KB Output is correct
115 Correct 516 ms 94788 KB Output is correct
116 Correct 260 ms 104560 KB Output is correct
117 Correct 235 ms 103844 KB Output is correct
118 Correct 278 ms 103288 KB Output is correct
119 Correct 237 ms 103036 KB Output is correct
120 Correct 228 ms 103348 KB Output is correct
121 Correct 245 ms 102904 KB Output is correct
122 Correct 268 ms 102720 KB Output is correct
123 Correct 322 ms 103724 KB Output is correct
124 Correct 309 ms 103248 KB Output is correct
125 Correct 295 ms 103160 KB Output is correct
126 Correct 272 ms 103436 KB Output is correct
127 Correct 263 ms 102960 KB Output is correct
128 Correct 278 ms 102948 KB Output is correct