oj.uz

Submission #220202

# Submission time Handle Problem Language Result Execution time Memory
220202 2020-04-07T10:10:07 Z DodgeBallMan Construction of Highway (JOI18_construction) C++14
100 / 100
 484 ms 110184 KB 
#include <bits/stdc++.h>
#define pii pair<int, int>
#define x first
#define y second

using namespace std;

const int N = 1e5 + 10;
int par[N], rot[N], sz[N], hv[N], c[N], pos[N], n;
long long t[N];
deque<pii> col[N];
vector<pii> qq;
vector<int> g[N];

int dfs( int u, int p ) {
    sz[u] = 1, hv[u] = -1, par[u] = p;
    int mx = -1;
    for( int v : g[u] ) if( v != p ) {
        int now = dfs( v, u );
        sz[u] += now;
        if( now > mx ) mx = now, hv[u] = v;
    }
    return sz[u];
}

void hld() {
    for( int i = 1, idx = 0; i <= n ; i++ ) if( hv[par[i]] != i ) 
        for( int j = i ; j != -1 ; j = hv[j] ) 
            rot[j] = i, pos[j] = ++idx;
}

long long query( int u ) {
    long long ret = 0;
    vector<int> coord;
    vector<pii> ar;
    //printf("U:%d\n",u);
    while( u ) {
        //printf("%d\n",u);
        vector<pii> all;
        int sz = pos[u] - pos[rot[u]] + 1;
        for( pii i : col[rot[u]] ) {
            if( i.y >= sz ) {
                all.emplace_back( i.x, sz );
                break;
            }
            else all.emplace_back( i ), sz -= i.y;
        }
        reverse( all.begin(), all.end() );
        for( pii i : all ) ar.emplace_back( i ), coord.emplace_back( i.x );
        u = par[rot[u]];
    }
    sort( coord.begin(), coord.end() );
    coord.resize( unique( coord.begin(), coord.end() ) - coord.begin() );
    vector<long long> t( coord.size() + 10, 0 );
    for( pii i : ar ) {
        //printf("%d %d\n",i.x,i.y);
        long long sum = 0;
        int x = lower_bound( coord.begin(), coord.end(), i.x ) - coord.begin() + 1;
        for( int j = x-1 ; j > 0 ; j -= j & -j ) sum += t[j];
        ret += sum * i.y; 
        for( int j = x ; j < ( int )coord.size() + 10 ; j +=  j & -j ) t[j] += i.y;
    }
    return ret;
}

void update( int u, int c ) {
    while( u ) {
        int sz = pos[u] - pos[rot[u]] + 1;
        while( !col[rot[u]].empty() ) {
            if( col[rot[u]].front().y <= sz ) sz -= col[rot[u]].front().y, col[rot[u]].pop_front();
            else {
                col[rot[u]].front().y -= sz; 
                break;
            }
        }
        col[rot[u]].emplace_front( c, pos[u] - pos[rot[u]] + 1 );
        u = par[rot[u]];
    }
}

int main()
{
    scanf("%d",&n);
    for( int i = 1 ; i <= n ; i++ ) scanf("%d",&c[i]);
    for( int i = 1, s, t ; i < n ; i++ ) {
        scanf("%d %d",&s,&t);
        g[s].emplace_back( t ), g[t].emplace_back( s );
        qq.emplace_back( pii( s, t ) );
    }
    dfs( 1, 0 ), hld();
    col[1].emplace_back( pii( c[1], 1 ) );
    for( pii i : qq ) {
        printf("%lld\n",query( i.x ) );
        update( i.y, c[i.y] );
    }
    return 0;
}

Compilation message

construction.cpp: In function 'int main()':
construction.cpp:83:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&n);
     ~~~~~^~~~~~~~~
construction.cpp:84:42: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for( int i = 1 ; i <= n ; i++ ) scanf("%d",&c[i]);
                                     ~~~~~^~~~~~~~~~~~
construction.cpp:86:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d",&s,&t);
         ~~~~~^~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 53 ms 69992 KB Output is correct
2 Correct 56 ms 70016 KB Output is correct
3 Correct 58 ms 70016 KB Output is correct
4 Correct 56 ms 70136 KB Output is correct
5 Correct 59 ms 70272 KB Output is correct
6 Correct 62 ms 70196 KB Output is correct
7 Correct 58 ms 70144 KB Output is correct
8 Correct 66 ms 70136 KB Output is correct
9 Correct 62 ms 70144 KB Output is correct
10 Correct 55 ms 70144 KB Output is correct
11 Correct 56 ms 70136 KB Output is correct
12 Correct 63 ms 70136 KB Output is correct
13 Correct 57 ms 70144 KB Output is correct
14 Correct 66 ms 70272 KB Output is correct
15 Correct 60 ms 70232 KB Output is correct
16 Correct 55 ms 70264 KB Output is correct
17 Correct 56 ms 70264 KB Output is correct
18 Correct 57 ms 70144 KB Output is correct
19 Correct 65 ms 70148 KB Output is correct
20 Correct 55 ms 70368 KB Output is correct
21 Correct 54 ms 70144 KB Output is correct
22 Correct 54 ms 70140 KB Output is correct
23 Correct 54 ms 70136 KB Output is correct
24 Correct 55 ms 70136 KB Output is correct
25 Correct 66 ms 70136 KB Output is correct
26 Correct 54 ms 70016 KB Output is correct
27 Correct 53 ms 70136 KB Output is correct
28 Correct 56 ms 70136 KB Output is correct
29 Correct 57 ms 70136 KB Output is correct
30 Correct 55 ms 70136 KB Output is correct
31 Correct 64 ms 70112 KB Output is correct
32 Correct 57 ms 70264 KB Output is correct
33 Correct 55 ms 70264 KB Output is correct
34 Correct 55 ms 70144 KB Output is correct
35 Correct 55 ms 70140 KB Output is correct
36 Correct 56 ms 70144 KB Output is correct
37 Correct 54 ms 70144 KB Output is correct
38 Correct 56 ms 70144 KB Output is correct
39 Correct 54 ms 70264 KB Output is correct
40 Correct 54 ms 70228 KB Output is correct
41 Correct 56 ms 70136 KB Output is correct
42 Correct 55 ms 70272 KB Output is correct
43 Correct 55 ms 70136 KB Output is correct
44 Correct 55 ms 70136 KB Output is correct

Subtask #2
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 53 ms 69992 KB Output is correct
2 Correct 56 ms 70016 KB Output is correct
3 Correct 58 ms 70016 KB Output is correct
4 Correct 56 ms 70136 KB Output is correct
5 Correct 59 ms 70272 KB Output is correct
6 Correct 62 ms 70196 KB Output is correct
7 Correct 58 ms 70144 KB Output is correct
8 Correct 66 ms 70136 KB Output is correct
9 Correct 62 ms 70144 KB Output is correct
10 Correct 55 ms 70144 KB Output is correct
11 Correct 56 ms 70136 KB Output is correct
12 Correct 63 ms 70136 KB Output is correct
13 Correct 57 ms 70144 KB Output is correct
14 Correct 66 ms 70272 KB Output is correct
15 Correct 60 ms 70232 KB Output is correct
16 Correct 55 ms 70264 KB Output is correct
17 Correct 56 ms 70264 KB Output is correct
18 Correct 57 ms 70144 KB Output is correct
19 Correct 65 ms 70148 KB Output is correct
20 Correct 55 ms 70368 KB Output is correct
21 Correct 54 ms 70144 KB Output is correct
22 Correct 54 ms 70140 KB Output is correct
23 Correct 54 ms 70136 KB Output is correct
24 Correct 55 ms 70136 KB Output is correct
25 Correct 66 ms 70136 KB Output is correct
26 Correct 54 ms 70016 KB Output is correct
27 Correct 53 ms 70136 KB Output is correct
28 Correct 56 ms 70136 KB Output is correct
29 Correct 57 ms 70136 KB Output is correct
30 Correct 55 ms 70136 KB Output is correct
31 Correct 64 ms 70112 KB Output is correct
32 Correct 57 ms 70264 KB Output is correct
33 Correct 55 ms 70264 KB Output is correct
34 Correct 55 ms 70144 KB Output is correct
35 Correct 55 ms 70140 KB Output is correct
36 Correct 56 ms 70144 KB Output is correct
37 Correct 54 ms 70144 KB Output is correct
38 Correct 56 ms 70144 KB Output is correct
39 Correct 54 ms 70264 KB Output is correct
40 Correct 54 ms 70228 KB Output is correct
41 Correct 56 ms 70136 KB Output is correct
42 Correct 55 ms 70272 KB Output is correct
43 Correct 55 ms 70136 KB Output is correct
44 Correct 55 ms 70136 KB Output is correct
45 Correct 57 ms 70440 KB Output is correct
46 Correct 60 ms 71288 KB Output is correct
47 Correct 62 ms 71288 KB Output is correct
48 Correct 63 ms 71288 KB Output is correct
49 Correct 61 ms 70556 KB Output is correct
50 Correct 54 ms 70648 KB Output is correct
51 Correct 57 ms 70776 KB Output is correct
52 Correct 59 ms 71544 KB Output is correct
53 Correct 59 ms 71548 KB Output is correct
54 Correct 59 ms 71544 KB Output is correct
55 Correct 59 ms 71544 KB Output is correct
56 Correct 60 ms 71416 KB Output is correct
57 Correct 67 ms 71288 KB Output is correct
58 Correct 67 ms 71288 KB Output is correct
59 Correct 70 ms 71288 KB Output is correct
60 Correct 66 ms 71288 KB Output is correct
61 Correct 61 ms 71416 KB Output is correct
62 Correct 61 ms 71424 KB Output is correct
63 Correct 59 ms 71416 KB Output is correct
64 Correct 62 ms 71416 KB Output is correct
65 Correct 63 ms 71288 KB Output is correct
66 Correct 62 ms 71288 KB Output is correct
67 Correct 63 ms 71296 KB Output is correct
68 Correct 54 ms 70648 KB Output is correct
69 Correct 58 ms 71576 KB Output is correct
70 Correct 59 ms 71544 KB Output is correct
71 Correct 68 ms 71416 KB Output is correct
72 Correct 66 ms 71288 KB Output is correct
73 Correct 70 ms 71416 KB Output is correct
74 Correct 61 ms 71544 KB Output is correct
75 Correct 59 ms 71416 KB Output is correct
76 Correct 61 ms 71416 KB Output is correct
77 Correct 60 ms 71416 KB Output is correct
78 Correct 60 ms 71416 KB Output is correct
79 Correct 65 ms 71416 KB Output is correct
80 Correct 60 ms 71296 KB Output is correct
81 Correct 61 ms 71416 KB Output is correct
82 Correct 60 ms 71416 KB Output is correct
83 Correct 60 ms 71288 KB Output is correct
84 Correct 61 ms 71416 KB Output is correct
85 Correct 60 ms 71416 KB Output is correct
86 Correct 60 ms 71288 KB Output is correct

Subtask #3
84.0 / 84.0

# Verdict Execution time Memory Grader output
1 Correct 53 ms 69992 KB Output is correct
2 Correct 56 ms 70016 KB Output is correct
3 Correct 58 ms 70016 KB Output is correct
4 Correct 56 ms 70136 KB Output is correct
5 Correct 59 ms 70272 KB Output is correct
6 Correct 62 ms 70196 KB Output is correct
7 Correct 58 ms 70144 KB Output is correct
8 Correct 66 ms 70136 KB Output is correct
9 Correct 62 ms 70144 KB Output is correct
10 Correct 55 ms 70144 KB Output is correct
11 Correct 56 ms 70136 KB Output is correct
12 Correct 63 ms 70136 KB Output is correct
13 Correct 57 ms 70144 KB Output is correct
14 Correct 66 ms 70272 KB Output is correct
15 Correct 60 ms 70232 KB Output is correct
16 Correct 55 ms 70264 KB Output is correct
17 Correct 56 ms 70264 KB Output is correct
18 Correct 57 ms 70144 KB Output is correct
19 Correct 65 ms 70148 KB Output is correct
20 Correct 55 ms 70368 KB Output is correct
21 Correct 54 ms 70144 KB Output is correct
22 Correct 54 ms 70140 KB Output is correct
23 Correct 54 ms 70136 KB Output is correct
24 Correct 55 ms 70136 KB Output is correct
25 Correct 66 ms 70136 KB Output is correct
26 Correct 54 ms 70016 KB Output is correct
27 Correct 53 ms 70136 KB Output is correct
28 Correct 56 ms 70136 KB Output is correct
29 Correct 57 ms 70136 KB Output is correct
30 Correct 55 ms 70136 KB Output is correct
31 Correct 64 ms 70112 KB Output is correct
32 Correct 57 ms 70264 KB Output is correct
33 Correct 55 ms 70264 KB Output is correct
34 Correct 55 ms 70144 KB Output is correct
35 Correct 55 ms 70140 KB Output is correct
36 Correct 56 ms 70144 KB Output is correct
37 Correct 54 ms 70144 KB Output is correct
38 Correct 56 ms 70144 KB Output is correct
39 Correct 54 ms 70264 KB Output is correct
40 Correct 54 ms 70228 KB Output is correct
41 Correct 56 ms 70136 KB Output is correct
42 Correct 55 ms 70272 KB Output is correct
43 Correct 55 ms 70136 KB Output is correct
44 Correct 55 ms 70136 KB Output is correct
45 Correct 57 ms 70440 KB Output is correct
46 Correct 60 ms 71288 KB Output is correct
47 Correct 62 ms 71288 KB Output is correct
48 Correct 63 ms 71288 KB Output is correct
49 Correct 61 ms 70556 KB Output is correct
50 Correct 54 ms 70648 KB Output is correct
51 Correct 57 ms 70776 KB Output is correct
52 Correct 59 ms 71544 KB Output is correct
53 Correct 59 ms 71548 KB Output is correct
54 Correct 59 ms 71544 KB Output is correct
55 Correct 59 ms 71544 KB Output is correct
56 Correct 60 ms 71416 KB Output is correct
57 Correct 67 ms 71288 KB Output is correct
58 Correct 67 ms 71288 KB Output is correct
59 Correct 70 ms 71288 KB Output is correct
60 Correct 66 ms 71288 KB Output is correct
61 Correct 61 ms 71416 KB Output is correct
62 Correct 61 ms 71424 KB Output is correct
63 Correct 59 ms 71416 KB Output is correct
64 Correct 62 ms 71416 KB Output is correct
65 Correct 63 ms 71288 KB Output is correct
66 Correct 62 ms 71288 KB Output is correct
67 Correct 63 ms 71296 KB Output is correct
68 Correct 54 ms 70648 KB Output is correct
69 Correct 58 ms 71576 KB Output is correct
70 Correct 59 ms 71544 KB Output is correct
71 Correct 68 ms 71416 KB Output is correct
72 Correct 66 ms 71288 KB Output is correct
73 Correct 70 ms 71416 KB Output is correct
74 Correct 61 ms 71544 KB Output is correct
75 Correct 59 ms 71416 KB Output is correct
76 Correct 61 ms 71416 KB Output is correct
77 Correct 60 ms 71416 KB Output is correct
78 Correct 60 ms 71416 KB Output is correct
79 Correct 65 ms 71416 KB Output is correct
80 Correct 60 ms 71296 KB Output is correct
81 Correct 61 ms 71416 KB Output is correct
82 Correct 60 ms 71416 KB Output is correct
83 Correct 60 ms 71288 KB Output is correct
84 Correct 61 ms 71416 KB Output is correct
85 Correct 60 ms 71416 KB Output is correct
86 Correct 60 ms 71288 KB Output is correct
87 Correct 81 ms 73336 KB Output is correct
88 Correct 130 ms 79860 KB Output is correct
89 Correct 386 ms 102704 KB Output is correct
90 Correct 368 ms 104552 KB Output is correct
91 Correct 382 ms 104680 KB Output is correct
92 Correct 158 ms 86380 KB Output is correct
93 Correct 165 ms 86380 KB Output is correct
94 Correct 157 ms 86376 KB Output is correct
95 Correct 203 ms 109676 KB Output is correct
96 Correct 227 ms 110184 KB Output is correct
97 Correct 223 ms 110060 KB Output is correct
98 Correct 220 ms 110056 KB Output is correct
99 Correct 225 ms 108620 KB Output is correct
100 Correct 413 ms 96232 KB Output is correct
101 Correct 484 ms 96664 KB Output is correct
102 Correct 469 ms 96512 KB Output is correct
103 Correct 476 ms 96512 KB Output is correct
104 Correct 223 ms 108392 KB Output is correct
105 Correct 230 ms 108524 KB Output is correct
106 Correct 218 ms 108524 KB Output is correct
107 Correct 368 ms 103896 KB Output is correct
108 Correct 369 ms 104048 KB Output is correct
109 Correct 375 ms 104300 KB Output is correct
110 Correct 149 ms 85864 KB Output is correct
111 Correct 203 ms 109676 KB Output is correct
112 Correct 213 ms 109548 KB Output is correct
113 Correct 210 ms 107884 KB Output is correct
114 Correct 412 ms 96232 KB Output is correct
115 Correct 479 ms 95956 KB Output is correct
116 Correct 225 ms 107864 KB Output is correct
117 Correct 222 ms 106348 KB Output is correct
118 Correct 229 ms 105580 KB Output is correct
119 Correct 233 ms 105196 KB Output is correct
120 Correct 218 ms 105832 KB Output is correct
121 Correct 217 ms 105192 KB Output is correct
122 Correct 226 ms 104936 KB Output is correct
123 Correct 231 ms 106216 KB Output is correct
124 Correct 235 ms 105580 KB Output is correct
125 Correct 256 ms 105344 KB Output is correct
126 Correct 230 ms 105968 KB Output is correct
127 Correct 230 ms 105260 KB Output is correct
128 Correct 235 ms 104936 KB Output is correct