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답안 #220196

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
220196 2020-04-07T09:53:33 Z DodgeBallMan Construction of Highway (JOI18_construction) C++14
16 / 100
 2000 ms 100952 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;
    for( int v : g[u] ) if( v != p ) {
        int mx = -1;
        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;
}

void up( int idx, long long val ) { for( int i = idx ; i < N ; i += ( i & -i ) ) t[i] += val; }
long long que( int idx, long long ret = 0 ) {
    for( int i = idx ; i > 0 ; i -= i & -i ) ret += t[i];
    return ret;
}

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]];
    }
    memset( t, 0, sizeof t );
    sort( coord.begin(), coord.end() );
    coord.resize( unique( coord.begin(), coord.end() ) - coord.begin() );
    for( pii i : ar ) {
        //printf("%d %d\n",ar[i].x,ar[i].y);
        int x = lower_bound( coord.begin(), coord.end(), i.x ) - coord.begin() + 1;
        ret += que( x - 1 ) * i.y; up( x, 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:86:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&n);
     ~~~~~^~~~~~~~~
construction.cpp:87:42: 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:89:14: 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

# 결과 실행 시간 메모리 Grader output
1 Correct 50 ms 70776 KB Output is correct
2 Correct 52 ms 70852 KB Output is correct
3 Correct 54 ms 70776 KB Output is correct
4 Correct 62 ms 70904 KB Output is correct
5 Correct 66 ms 70904 KB Output is correct
6 Correct 66 ms 70904 KB Output is correct
7 Correct 65 ms 71032 KB Output is correct
8 Correct 62 ms 70904 KB Output is correct
9 Correct 61 ms 70904 KB Output is correct
10 Correct 61 ms 70776 KB Output is correct
11 Correct 74 ms 70904 KB Output is correct
12 Correct 76 ms 71160 KB Output is correct
13 Correct 75 ms 71032 KB Output is correct
14 Correct 73 ms 71032 KB Output is correct
15 Correct 65 ms 70904 KB Output is correct
16 Correct 71 ms 70904 KB Output is correct
17 Correct 67 ms 71032 KB Output is correct
18 Correct 64 ms 70904 KB Output is correct
19 Correct 76 ms 70904 KB Output is correct
20 Correct 75 ms 70904 KB Output is correct
21 Correct 74 ms 70912 KB Output is correct
22 Correct 66 ms 70904 KB Output is correct
23 Correct 66 ms 71032 KB Output is correct
24 Correct 65 ms 70904 KB Output is correct
25 Correct 65 ms 70912 KB Output is correct
26 Correct 60 ms 70776 KB Output is correct
27 Correct 78 ms 70904 KB Output is correct
28 Correct 75 ms 70912 KB Output is correct
29 Correct 74 ms 70912 KB Output is correct
30 Correct 65 ms 70904 KB Output is correct
31 Correct 65 ms 70912 KB Output is correct
32 Correct 76 ms 71032 KB Output is correct
33 Correct 69 ms 71032 KB Output is correct
34 Correct 66 ms 70912 KB Output is correct
35 Correct 67 ms 70904 KB Output is correct
36 Correct 71 ms 70904 KB Output is correct
37 Correct 67 ms 71032 KB Output is correct
38 Correct 79 ms 71128 KB Output is correct
39 Correct 71 ms 71032 KB Output is correct
40 Correct 69 ms 70904 KB Output is correct
41 Correct 70 ms 71008 KB Output is correct
42 Correct 70 ms 71032 KB Output is correct
43 Correct 68 ms 70904 KB Output is correct
44 Correct 69 ms 71032 KB Output is correct

Subtask #2
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 50 ms 70776 KB Output is correct
2 Correct 52 ms 70852 KB Output is correct
3 Correct 54 ms 70776 KB Output is correct
4 Correct 62 ms 70904 KB Output is correct
5 Correct 66 ms 70904 KB Output is correct
6 Correct 66 ms 70904 KB Output is correct
7 Correct 65 ms 71032 KB Output is correct
8 Correct 62 ms 70904 KB Output is correct
9 Correct 61 ms 70904 KB Output is correct
10 Correct 61 ms 70776 KB Output is correct
11 Correct 74 ms 70904 KB Output is correct
12 Correct 76 ms 71160 KB Output is correct
13 Correct 75 ms 71032 KB Output is correct
14 Correct 73 ms 71032 KB Output is correct
15 Correct 65 ms 70904 KB Output is correct
16 Correct 71 ms 70904 KB Output is correct
17 Correct 67 ms 71032 KB Output is correct
18 Correct 64 ms 70904 KB Output is correct
19 Correct 76 ms 70904 KB Output is correct
20 Correct 75 ms 70904 KB Output is correct
21 Correct 74 ms 70912 KB Output is correct
22 Correct 66 ms 70904 KB Output is correct
23 Correct 66 ms 71032 KB Output is correct
24 Correct 65 ms 70904 KB Output is correct
25 Correct 65 ms 70912 KB Output is correct
26 Correct 60 ms 70776 KB Output is correct
27 Correct 78 ms 70904 KB Output is correct
28 Correct 75 ms 70912 KB Output is correct
29 Correct 74 ms 70912 KB Output is correct
30 Correct 65 ms 70904 KB Output is correct
31 Correct 65 ms 70912 KB Output is correct
32 Correct 76 ms 71032 KB Output is correct
33 Correct 69 ms 71032 KB Output is correct
34 Correct 66 ms 70912 KB Output is correct
35 Correct 67 ms 70904 KB Output is correct
36 Correct 71 ms 70904 KB Output is correct
37 Correct 67 ms 71032 KB Output is correct
38 Correct 79 ms 71128 KB Output is correct
39 Correct 71 ms 71032 KB Output is correct
40 Correct 69 ms 70904 KB Output is correct
41 Correct 70 ms 71008 KB Output is correct
42 Correct 70 ms 71032 KB Output is correct
43 Correct 68 ms 70904 KB Output is correct
44 Correct 69 ms 71032 KB Output is correct
45 Correct 81 ms 71036 KB Output is correct
46 Correct 169 ms 72056 KB Output is correct
47 Correct 160 ms 72184 KB Output is correct
48 Correct 168 ms 72156 KB Output is correct
49 Correct 141 ms 71288 KB Output is correct
50 Correct 144 ms 71352 KB Output is correct
51 Correct 144 ms 71296 KB Output is correct
52 Correct 789 ms 72420 KB Output is correct
53 Correct 792 ms 72196 KB Output is correct
54 Correct 774 ms 72184 KB Output is correct
55 Correct 767 ms 72396 KB Output is correct
56 Correct 710 ms 72184 KB Output is correct
57 Correct 161 ms 72056 KB Output is correct
58 Correct 159 ms 72104 KB Output is correct
59 Correct 161 ms 72056 KB Output is correct
60 Correct 160 ms 72056 KB Output is correct
61 Correct 770 ms 72416 KB Output is correct
62 Correct 745 ms 72312 KB Output is correct
63 Correct 753 ms 72292 KB Output is correct
64 Correct 173 ms 72116 KB Output is correct
65 Correct 156 ms 72184 KB Output is correct
66 Correct 156 ms 72056 KB Output is correct
67 Correct 159 ms 72056 KB Output is correct
68 Correct 158 ms 71288 KB Output is correct
69 Correct 809 ms 72188 KB Output is correct
70 Correct 760 ms 72312 KB Output is correct
71 Correct 679 ms 72312 KB Output is correct
72 Correct 169 ms 72056 KB Output is correct
73 Correct 167 ms 72192 KB Output is correct
74 Correct 759 ms 72312 KB Output is correct
75 Correct 433 ms 72184 KB Output is correct
76 Correct 361 ms 72300 KB Output is correct
77 Correct 347 ms 72056 KB Output is correct
78 Correct 456 ms 72276 KB Output is correct
79 Correct 341 ms 72184 KB Output is correct
80 Correct 315 ms 72184 KB Output is correct
81 Correct 464 ms 72184 KB Output is correct
82 Correct 374 ms 72312 KB Output is correct
83 Correct 315 ms 72184 KB Output is correct
84 Correct 465 ms 72312 KB Output is correct
85 Correct 363 ms 72192 KB Output is correct
86 Correct 318 ms 72296 KB Output is correct

Subtask #3
0 / 84.0

# 결과 실행 시간 메모리 Grader output
1 Correct 50 ms 70776 KB Output is correct
2 Correct 52 ms 70852 KB Output is correct
3 Correct 54 ms 70776 KB Output is correct
4 Correct 62 ms 70904 KB Output is correct
5 Correct 66 ms 70904 KB Output is correct
6 Correct 66 ms 70904 KB Output is correct
7 Correct 65 ms 71032 KB Output is correct
8 Correct 62 ms 70904 KB Output is correct
9 Correct 61 ms 70904 KB Output is correct
10 Correct 61 ms 70776 KB Output is correct
11 Correct 74 ms 70904 KB Output is correct
12 Correct 76 ms 71160 KB Output is correct
13 Correct 75 ms 71032 KB Output is correct
14 Correct 73 ms 71032 KB Output is correct
15 Correct 65 ms 70904 KB Output is correct
16 Correct 71 ms 70904 KB Output is correct
17 Correct 67 ms 71032 KB Output is correct
18 Correct 64 ms 70904 KB Output is correct
19 Correct 76 ms 70904 KB Output is correct
20 Correct 75 ms 70904 KB Output is correct
21 Correct 74 ms 70912 KB Output is correct
22 Correct 66 ms 70904 KB Output is correct
23 Correct 66 ms 71032 KB Output is correct
24 Correct 65 ms 70904 KB Output is correct
25 Correct 65 ms 70912 KB Output is correct
26 Correct 60 ms 70776 KB Output is correct
27 Correct 78 ms 70904 KB Output is correct
28 Correct 75 ms 70912 KB Output is correct
29 Correct 74 ms 70912 KB Output is correct
30 Correct 65 ms 70904 KB Output is correct
31 Correct 65 ms 70912 KB Output is correct
32 Correct 76 ms 71032 KB Output is correct
33 Correct 69 ms 71032 KB Output is correct
34 Correct 66 ms 70912 KB Output is correct
35 Correct 67 ms 70904 KB Output is correct
36 Correct 71 ms 70904 KB Output is correct
37 Correct 67 ms 71032 KB Output is correct
38 Correct 79 ms 71128 KB Output is correct
39 Correct 71 ms 71032 KB Output is correct
40 Correct 69 ms 70904 KB Output is correct
41 Correct 70 ms 71008 KB Output is correct
42 Correct 70 ms 71032 KB Output is correct
43 Correct 68 ms 70904 KB Output is correct
44 Correct 69 ms 71032 KB Output is correct
45 Correct 81 ms 71036 KB Output is correct
46 Correct 169 ms 72056 KB Output is correct
47 Correct 160 ms 72184 KB Output is correct
48 Correct 168 ms 72156 KB Output is correct
49 Correct 141 ms 71288 KB Output is correct
50 Correct 144 ms 71352 KB Output is correct
51 Correct 144 ms 71296 KB Output is correct
52 Correct 789 ms 72420 KB Output is correct
53 Correct 792 ms 72196 KB Output is correct
54 Correct 774 ms 72184 KB Output is correct
55 Correct 767 ms 72396 KB Output is correct
56 Correct 710 ms 72184 KB Output is correct
57 Correct 161 ms 72056 KB Output is correct
58 Correct 159 ms 72104 KB Output is correct
59 Correct 161 ms 72056 KB Output is correct
60 Correct 160 ms 72056 KB Output is correct
61 Correct 770 ms 72416 KB Output is correct
62 Correct 745 ms 72312 KB Output is correct
63 Correct 753 ms 72292 KB Output is correct
64 Correct 173 ms 72116 KB Output is correct
65 Correct 156 ms 72184 KB Output is correct
66 Correct 156 ms 72056 KB Output is correct
67 Correct 159 ms 72056 KB Output is correct
68 Correct 158 ms 71288 KB Output is correct
69 Correct 809 ms 72188 KB Output is correct
70 Correct 760 ms 72312 KB Output is correct
71 Correct 679 ms 72312 KB Output is correct
72 Correct 169 ms 72056 KB Output is correct
73 Correct 167 ms 72192 KB Output is correct
74 Correct 759 ms 72312 KB Output is correct
75 Correct 433 ms 72184 KB Output is correct
76 Correct 361 ms 72300 KB Output is correct
77 Correct 347 ms 72056 KB Output is correct
78 Correct 456 ms 72276 KB Output is correct
79 Correct 341 ms 72184 KB Output is correct
80 Correct 315 ms 72184 KB Output is correct
81 Correct 464 ms 72184 KB Output is correct
82 Correct 374 ms 72312 KB Output is correct
83 Correct 315 ms 72184 KB Output is correct
84 Correct 465 ms 72312 KB Output is correct
85 Correct 363 ms 72192 KB Output is correct
86 Correct 318 ms 72296 KB Output is correct
87 Correct 318 ms 74104 KB Output is correct
88 Correct 877 ms 80628 KB Output is correct
89 Execution timed out 2081 ms 100952 KB Time limit exceeded
90 Halted 0 ms 0 KB -