oj.uz

Submission #68621

# Submission time Handle Problem Language Result Execution time Memory
68621 2018-08-17T15:13:31 Z duality Election Campaign (JOI15_election_campaign) C++11
100 / 100
 290 ms 145136 KB 
#define DEBUG 0

#include <bits/stdc++.h>
using namespace std;

#if DEBUG
// basic debugging macros
int __i__,__j__;
#define printLine(l) for(__i__=0;__i__<l;__i__++){cout<<"-";}cout<<endl
#define printLine2(l,c) for(__i__=0;__i__<l;__i__++){cout<<c;}cout<<endl
#define printVar(n) cout<<#n<<": "<<n<<endl
#define printArr(a,l) cout<<#a<<": ";for(__i__=0;__i__<l;__i__++){cout<<a[__i__]<<" ";}cout<<endl
#define print2dArr(a,r,c) cout<<#a<<":\n";for(__i__=0;__i__<r;__i__++){for(__j__=0;__j__<c;__j__++){cout<<a[__i__][__j__]<<" ";}cout<<endl;}
#define print2dArr2(a,r,c,l) cout<<#a<<":\n";for(__i__=0;__i__<r;__i__++){for(__j__=0;__j__<c;__j__++){cout<<setw(l)<<setfill(' ')<<a[__i__][__j__]<<" ";}cout<<endl;}

// advanced debugging class
// debug 1,2,'A',"test";
class _Debug {
    public:
        template<typename T>
        _Debug& operator,(T val) {
            cout << val << endl;
            return *this;
        }
};
#define debug _Debug(),
#else
#define printLine(l)
#define printLine2(l,c)
#define printVar(n)
#define printArr(a,l)
#define print2dArr(a,r,c)
#define print2dArr2(a,r,c,l)
#define debug
#endif

// define
#define MAX_VAL 999999999
#define MAX_VAL_2 999999999999999999LL
#define EPS 1e-6
#define mp make_pair
#define pb push_back

// typedef
typedef unsigned int UI;
typedef long long int LLI;
typedef unsigned long long int ULLI;
typedef unsigned short int US;
typedef pair<int,int> pii;
typedef pair<LLI,LLI> plli;
typedef vector<int> vi;
typedef vector<LLI> vlli;
typedef vector<pii> vpii;
typedef vector<plli> vplli;

// ---------- END OF TEMPLATE ----------

vi adjList[100000];
int parent[100000],depth[100000],size[100000],heavy[100000];
int chain[100000],disc[100000],head[100000],csize[100000];
int num = 0,c = 0;
int doDFS(int u,int p,int d) {
    int i;
    parent[u] = p,depth[u] = d,size[u] = 1,heavy[u] = -1;
    for (i = 0; i < adjList[u].size(); i++) {
        int v = adjList[u][i];
        if (v != p) {
            size[u] += doDFS(v,u,d+1);
            if ((heavy[u] == -1) || (size[v] > size[heavy[u]])) heavy[u] = v;
        }
    }
    return size[u];
}
int doHLD(int u,int p) {
    int i;
    chain[u] = c;
    disc[u] = num++;
    if (csize[c] == 0) head[c] = u;
    csize[c]++;
    if (heavy[u] != -1) doHLD(heavy[u],u);
    for (i = 0; i < adjList[u].size(); i++) {
        int v = adjList[u][i];
        if ((v != p) && (v != heavy[u])) c++,doHLD(v,u);
    }
    return 0;
}
vector<pair<pii,int> > paths[100000];
int dp[100000];
int bit[100001];
int query(int i) {
    int sum = 0;
    for (i++; i > 0; i -= i & (-i)) sum += bit[i];
    return sum;
}
int update(int i,int num,int N) {
    for (i++; i <= N; i += i & (-i)) bit[i] += num;
    return 0;
}
int doDFS2(int u,int N) {
    int i;
    for (i = 0; i < adjList[u].size(); i++) {
        int v = adjList[u][i];
        if (v != parent[u]) dp[u] += doDFS2(v,N);
    }
    for (i = 0; i < paths[u].size(); i++) {
        int uu = paths[u][i].first.first;
        int vv = paths[u][i].first.second;
        int s = 0;
        while (chain[uu] != chain[vv]) {
            if (depth[head[chain[uu]]] < depth[head[chain[vv]]]) swap(uu,vv);
            s += query(disc[uu])-query(disc[head[chain[uu]]]-1);
            uu = parent[head[chain[uu]]];
        }
        if (depth[uu] < depth[vv]) s += query(disc[vv])-query(disc[uu]-1);
        else s += query(disc[uu])-query(disc[vv]-1);
        dp[u] = max(dp[u],s+paths[u][i].second);
    }
    if (parent[u] != -1) update(disc[parent[u]],dp[u],N);
    update(disc[u],-dp[u],N);
    return dp[u];
}
int main() {
    int i;
    int N,M,A,B,C;
    scanf("%d",&N);
    for (i = 1; i < N; i++) {
        scanf("%d %d",&A,&B);
        A--,B--;
        adjList[A].pb(B);
        adjList[B].pb(A);
    }
    doDFS(0,-1,0);
    doHLD(0,-1);
    scanf("%d",&M);
    for (i = 0; i < M; i++) {
        scanf("%d %d %d",&A,&B,&C);
        A--,B--;
        int u = A,v = B;
        while (chain[u] != chain[v]) {
            if (depth[head[chain[u]]] < depth[head[chain[v]]]) swap(u,v);
            u = parent[head[chain[u]]];
        }
        if (depth[u] < depth[v]) paths[u].pb(mp(mp(A,B),C));
        else paths[v].pb(mp(mp(A,B),C));
    }
    printf("%d\n",doDFS2(0,N));

    return 0;
}

Compilation message

election_campaign.cpp: In function 'int doDFS(int, int, int)':
election_campaign.cpp:65:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (i = 0; i < adjList[u].size(); i++) {
                 ~~^~~~~~~~~~~~~~~~~~~
election_campaign.cpp: In function 'int doHLD(int, int)':
election_campaign.cpp:81:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (i = 0; i < adjList[u].size(); i++) {
                 ~~^~~~~~~~~~~~~~~~~~~
election_campaign.cpp: In function 'int doDFS2(int, int)':
election_campaign.cpp:101:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (i = 0; i < adjList[u].size(); i++) {
                 ~~^~~~~~~~~~~~~~~~~~~
election_campaign.cpp:105:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (i = 0; i < paths[u].size(); i++) {
                 ~~^~~~~~~~~~~~~~~~~
election_campaign.cpp: In function 'int main()':
election_campaign.cpp:125:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&N);
     ~~~~~^~~~~~~~~
election_campaign.cpp:127:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d",&A,&B);
         ~~~~~^~~~~~~~~~~~~~~
election_campaign.cpp:134:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&M);
     ~~~~~^~~~~~~~~
election_campaign.cpp:136:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d %d",&A,&B,&C);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 5112 KB Output is correct
2 Correct 6 ms 5212 KB Output is correct
3 Correct 6 ms 5324 KB Output is correct
4 Correct 6 ms 5436 KB Output is correct
5 Correct 115 ms 13380 KB Output is correct
6 Correct 60 ms 21876 KB Output is correct
7 Correct 112 ms 21876 KB Output is correct
8 Correct 94 ms 21876 KB Output is correct
9 Correct 132 ms 21876 KB Output is correct
10 Correct 94 ms 21876 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 21876 KB Output is correct
2 Correct 7 ms 21876 KB Output is correct
3 Correct 7 ms 21876 KB Output is correct
4 Correct 125 ms 31116 KB Output is correct
5 Correct 127 ms 33484 KB Output is correct
6 Correct 125 ms 36020 KB Output is correct
7 Correct 128 ms 38676 KB Output is correct
8 Correct 125 ms 40932 KB Output is correct
9 Correct 121 ms 43388 KB Output is correct
10 Correct 130 ms 45884 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 21876 KB Output is correct
2 Correct 7 ms 21876 KB Output is correct
3 Correct 7 ms 21876 KB Output is correct
4 Correct 125 ms 31116 KB Output is correct
5 Correct 127 ms 33484 KB Output is correct
6 Correct 125 ms 36020 KB Output is correct
7 Correct 128 ms 38676 KB Output is correct
8 Correct 125 ms 40932 KB Output is correct
9 Correct 121 ms 43388 KB Output is correct
10 Correct 130 ms 45884 KB Output is correct
11 Correct 18 ms 45884 KB Output is correct
12 Correct 127 ms 48824 KB Output is correct
13 Correct 129 ms 51668 KB Output is correct
14 Correct 126 ms 54312 KB Output is correct
15 Correct 144 ms 57140 KB Output is correct
16 Correct 128 ms 59744 KB Output is correct
17 Correct 133 ms 62476 KB Output is correct
18 Correct 127 ms 65208 KB Output is correct
19 Correct 124 ms 68192 KB Output is correct
20 Correct 124 ms 70848 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 257 ms 70848 KB Output is correct
2 Correct 117 ms 75656 KB Output is correct
3 Correct 202 ms 75656 KB Output is correct
4 Correct 167 ms 75656 KB Output is correct
5 Correct 204 ms 79736 KB Output is correct
6 Correct 165 ms 79736 KB Output is correct
7 Correct 200 ms 84364 KB Output is correct
8 Correct 224 ms 84364 KB Output is correct
9 Correct 120 ms 93076 KB Output is correct
10 Correct 191 ms 93076 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 5112 KB Output is correct
2 Correct 6 ms 5212 KB Output is correct
3 Correct 6 ms 5324 KB Output is correct
4 Correct 6 ms 5436 KB Output is correct
5 Correct 115 ms 13380 KB Output is correct
6 Correct 60 ms 21876 KB Output is correct
7 Correct 112 ms 21876 KB Output is correct
8 Correct 94 ms 21876 KB Output is correct
9 Correct 132 ms 21876 KB Output is correct
10 Correct 94 ms 21876 KB Output is correct
11 Correct 7 ms 93076 KB Output is correct
12 Correct 8 ms 93076 KB Output is correct
13 Correct 7 ms 93076 KB Output is correct
14 Correct 7 ms 93076 KB Output is correct
15 Correct 8 ms 93076 KB Output is correct
16 Correct 8 ms 93076 KB Output is correct
17 Correct 7 ms 93076 KB Output is correct
18 Correct 8 ms 93076 KB Output is correct
19 Correct 7 ms 93076 KB Output is correct
20 Correct 10 ms 93076 KB Output is correct

Subtask #6
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 5112 KB Output is correct
2 Correct 6 ms 5212 KB Output is correct
3 Correct 6 ms 5324 KB Output is correct
4 Correct 6 ms 5436 KB Output is correct
5 Correct 115 ms 13380 KB Output is correct
6 Correct 60 ms 21876 KB Output is correct
7 Correct 112 ms 21876 KB Output is correct
8 Correct 94 ms 21876 KB Output is correct
9 Correct 132 ms 21876 KB Output is correct
10 Correct 94 ms 21876 KB Output is correct
11 Correct 6 ms 21876 KB Output is correct
12 Correct 7 ms 21876 KB Output is correct
13 Correct 7 ms 21876 KB Output is correct
14 Correct 125 ms 31116 KB Output is correct
15 Correct 127 ms 33484 KB Output is correct
16 Correct 125 ms 36020 KB Output is correct
17 Correct 128 ms 38676 KB Output is correct
18 Correct 125 ms 40932 KB Output is correct
19 Correct 121 ms 43388 KB Output is correct
20 Correct 130 ms 45884 KB Output is correct
21 Correct 18 ms 45884 KB Output is correct
22 Correct 127 ms 48824 KB Output is correct
23 Correct 129 ms 51668 KB Output is correct
24 Correct 126 ms 54312 KB Output is correct
25 Correct 144 ms 57140 KB Output is correct
26 Correct 128 ms 59744 KB Output is correct
27 Correct 133 ms 62476 KB Output is correct
28 Correct 127 ms 65208 KB Output is correct
29 Correct 124 ms 68192 KB Output is correct
30 Correct 124 ms 70848 KB Output is correct
31 Correct 257 ms 70848 KB Output is correct
32 Correct 117 ms 75656 KB Output is correct
33 Correct 202 ms 75656 KB Output is correct
34 Correct 167 ms 75656 KB Output is correct
35 Correct 204 ms 79736 KB Output is correct
36 Correct 165 ms 79736 KB Output is correct
37 Correct 200 ms 84364 KB Output is correct
38 Correct 224 ms 84364 KB Output is correct
39 Correct 120 ms 93076 KB Output is correct
40 Correct 191 ms 93076 KB Output is correct
41 Correct 7 ms 93076 KB Output is correct
42 Correct 8 ms 93076 KB Output is correct
43 Correct 7 ms 93076 KB Output is correct
44 Correct 7 ms 93076 KB Output is correct
45 Correct 8 ms 93076 KB Output is correct
46 Correct 8 ms 93076 KB Output is correct
47 Correct 7 ms 93076 KB Output is correct
48 Correct 8 ms 93076 KB Output is correct
49 Correct 7 ms 93076 KB Output is correct
50 Correct 10 ms 93076 KB Output is correct
51 Correct 224 ms 93076 KB Output is correct
52 Correct 124 ms 101168 KB Output is correct
53 Correct 194 ms 101168 KB Output is correct
54 Correct 162 ms 101168 KB Output is correct
55 Correct 257 ms 101912 KB Output is correct
56 Correct 125 ms 112136 KB Output is correct
57 Correct 225 ms 112136 KB Output is correct
58 Correct 170 ms 112136 KB Output is correct
59 Correct 255 ms 112984 KB Output is correct
60 Correct 127 ms 123412 KB Output is correct
61 Correct 201 ms 123412 KB Output is correct
62 Correct 178 ms 123412 KB Output is correct
63 Correct 290 ms 123468 KB Output is correct
64 Correct 146 ms 134280 KB Output is correct
65 Correct 251 ms 134280 KB Output is correct
66 Correct 179 ms 134280 KB Output is correct
67 Correct 278 ms 134720 KB Output is correct
68 Correct 180 ms 145136 KB Output is correct
69 Correct 215 ms 145136 KB Output is correct
70 Correct 177 ms 145136 KB Output is correct