oj.uz

Submission #59187

# Submission time Handle Problem Language Result Execution time Memory
59187 2018-07-21T01:02:34 Z duality Simurgh (IOI17_simurgh) C++11
100 / 100
 210 ms 11256 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 ----------
#include "simurgh.h"

int label[500][500],know[500][500];
vi adjList[500];
int parent[500],disc[500],low[500],lowlabel[500];
int com[500],first[500];
int num = 0,bcc = 0;
vi S,tree;
int doDFS(int u,int p) {
    int i;
    parent[u] = p,disc[u] = low[u] = num++;
    S.pb(u);
    for (i = 0; i < adjList[u].size(); i++) {
        int v = adjList[u][i];
        if (disc[v] == -1) {
            tree.pb(label[u][v]),doDFS(v,u);
            if (low[v] < low[u]) low[u] = low[v],lowlabel[u] = lowlabel[v];
            if (low[v] > disc[u]) {
                while (1) {
                    int w = S.back();
                    S.pop_back();
                    com[w] = bcc;
                    if (w == v) break;
                }
                bcc++;
            }
        }
        else if ((v != p) && (disc[v] < low[u])) low[u] = disc[v],lowlabel[u] = label[u][v];
    }
    return 0;
}
int s[500],r[500];
vpii adjList2[125000];
int royal[125000];
int doDFS2(int u,int rr) {
    if (royal[u] != -1) return 0;
    int i;
    royal[u] = rr;
    for (i = 0; i < adjList2[u].size(); i++) doDFS2(adjList2[u][i].first,rr+adjList2[u][i].second);
    return 0;
}
int ds[500];
int find(int n) {
    if (ds[n] != n) ds[n] = find(ds[n]);
    return ds[n];
}
int query(vi forest,vi &u,vi &v,int n) {
    int i;
    for (i = 0; i < n; i++) ds[i] = i;
    for (i = 0; i < forest.size(); i++) ds[find(u[forest[i]])] = find(v[forest[i]]);
    int sub = 0;
    for (i = 0; i < tree.size(); i++) {
        int pu = find(u[tree[i]]),pv = find(v[tree[i]]);
        if (pu != pv) forest.pb(tree[i]),sub += royal[tree[i]],ds[pu] = pv;
    }
    return count_common_roads(forest)-sub;
}
int findAll(vi &poss,vi &u,vi &v,int n,int l,int r,int s) {
    if (s == 0) {
        int i;
        for (i = l; i <= r; i++) royal[poss[i]] = 0;
        return 0;
    }
    if (l == r) {
        royal[poss[l]] = 1;
        return 0;
    }

    int i,m = (l+r) / 2;
    vi ask;
    for (i = l; i <= m; i++) ask.pb(poss[i]);
    int ls = query(ask,u,v,n);
    findAll(poss,u,v,n,l,m,ls);
    findAll(poss,u,v,n,m+1,r,s-ls);
    return 0;
}
vector<int> find_roads(int n,vector<int> u,vector<int> v) {
    int i,j;
    memset(label,-1,sizeof(label));
    memset(royal,-1,sizeof(royal));
    for (i = 0; i < u.size(); i++) {
        label[u[i]][v[i]] = label[v[i]][u[i]] = i;
        adjList[u[i]].pb(v[i]);
        adjList[v[i]].pb(u[i]);
    }
    for (i = 0; i < n; i++) disc[i] = low[i] = -1;
    doDFS(0,-1);
    while (!S.empty()) {
        int w = S.back();
        S.pop_back();
        com[w] = bcc;
    }
    bcc++;
    int t = count_common_roads(tree);
    for (i = 0; i < bcc; i++) s[i] = r[i] = -1;
    for (i = 1; i < n; i++) {
        int u = label[i][parent[i]],v = lowlabel[i];
        if (com[i] == com[parent[i]]) {
            int p = find(tree.begin(),tree.end(),u)-tree.begin();
            tree[p] = v;
            int t2 = count_common_roads(tree);
            tree[p] = u;
            adjList2[u].pb(mp(v,t2-t));
            adjList2[v].pb(mp(u,t-t2));
            if (t != t2) s[com[i]] = u,r[com[i]] = (t > t2);
            int w = i;
            while (disc[parent[w]] != low[i]) w = parent[w];
            w = label[w][parent[w]];
            p = find(tree.begin(),tree.end(),w)-tree.begin();
            tree[p] = v;
            t2 = count_common_roads(tree);
            tree[p] = w;
            adjList2[w].pb(mp(v,t2-t));
            adjList2[v].pb(mp(w,t-t2));
            if (t != t2) s[com[i]] = w,r[com[i]] = (t > t2);
            first[com[i]] = u;
        }
        else royal[u] = 1;
    }
    for (i = 0; i < bcc; i++) {
        if (s[i] == -1) s[i] = first[i],r[i] = 0;
        doDFS2(s[i],r[i]);
    }
    for (i = 0; i < n; i++) {
        vi poss;
        for (j = 0; j < adjList[i].size(); j++) {
            int v = adjList[i][j];
            if ((v > i) && (royal[label[i][v]] == -1)) poss.pb(label[i][v]);
        }
        findAll(poss,u,v,n,0,poss.size()-1,query(poss,u,v,n));
    }
    vi ans;
    for (i = 0; i < u.size(); i++) {
        if (royal[i]) ans.pb(i);
    }
    return ans;
}

Compilation message

simurgh.cpp: In function 'int doDFS(int, int)':
simurgh.cpp:69:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (i = 0; i < adjList[u].size(); i++) {
                 ~~^~~~~~~~~~~~~~~~~~~
simurgh.cpp: In function 'int doDFS2(int, int)':
simurgh.cpp:95:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (i = 0; i < adjList2[u].size(); i++) doDFS2(adjList2[u][i].first,rr+adjList2[u][i].second);
                 ~~^~~~~~~~~~~~~~~~~~~~
simurgh.cpp: In function 'int query(vi, vi&, vi&, int)':
simurgh.cpp:106:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (i = 0; i < forest.size(); i++) ds[find(u[forest[i]])] = find(v[forest[i]]);
                 ~~^~~~~~~~~~~~~~~
simurgh.cpp:108:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (i = 0; i < tree.size(); i++) {
                 ~~^~~~~~~~~~~~~
simurgh.cpp: In function 'std::vector<int> find_roads(int, std::vector<int>, std::vector<int>)':
simurgh.cpp:137:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (i = 0; i < u.size(); i++) {
                 ~~^~~~~~~~~~
simurgh.cpp:182:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for (j = 0; j < adjList[i].size(); j++) {
                     ~~^~~~~~~~~~~~~~~~~~~
simurgh.cpp:189:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (i = 0; i < u.size(); i++) {
                 ~~^~~~~~~~~~

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 4728 KB correct
2 Correct 7 ms 4968 KB correct
3 Correct 7 ms 4968 KB correct
4 Correct 7 ms 4968 KB correct
5 Correct 7 ms 4968 KB correct
6 Correct 6 ms 5020 KB correct
7 Correct 7 ms 5020 KB correct
8 Correct 7 ms 5020 KB correct
9 Correct 7 ms 5020 KB correct
10 Correct 7 ms 5084 KB correct
11 Correct 7 ms 5088 KB correct
12 Correct 7 ms 5088 KB correct
13 Correct 7 ms 5088 KB correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 4728 KB correct
2 Correct 7 ms 4968 KB correct
3 Correct 7 ms 4968 KB correct
4 Correct 7 ms 4968 KB correct
5 Correct 7 ms 4968 KB correct
6 Correct 6 ms 5020 KB correct
7 Correct 7 ms 5020 KB correct
8 Correct 7 ms 5020 KB correct
9 Correct 7 ms 5020 KB correct
10 Correct 7 ms 5084 KB correct
11 Correct 7 ms 5088 KB correct
12 Correct 7 ms 5088 KB correct
13 Correct 7 ms 5088 KB correct
14 Correct 8 ms 5120 KB correct
15 Correct 7 ms 5128 KB correct
16 Correct 9 ms 5128 KB correct
17 Correct 7 ms 5128 KB correct
18 Correct 6 ms 5128 KB correct
19 Correct 9 ms 5128 KB correct
20 Correct 7 ms 5128 KB correct
21 Correct 8 ms 5128 KB correct
22 Correct 8 ms 5128 KB correct
23 Correct 9 ms 5128 KB correct
24 Correct 7 ms 5128 KB correct
25 Correct 11 ms 5128 KB correct
26 Correct 7 ms 5128 KB correct
27 Correct 9 ms 5128 KB correct
28 Correct 9 ms 5128 KB correct
29 Correct 8 ms 5128 KB correct
30 Correct 8 ms 5128 KB correct
31 Correct 9 ms 5128 KB correct
32 Correct 8 ms 5128 KB correct
33 Correct 9 ms 5128 KB correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 4728 KB correct
2 Correct 7 ms 4968 KB correct
3 Correct 7 ms 4968 KB correct
4 Correct 7 ms 4968 KB correct
5 Correct 7 ms 4968 KB correct
6 Correct 6 ms 5020 KB correct
7 Correct 7 ms 5020 KB correct
8 Correct 7 ms 5020 KB correct
9 Correct 7 ms 5020 KB correct
10 Correct 7 ms 5084 KB correct
11 Correct 7 ms 5088 KB correct
12 Correct 7 ms 5088 KB correct
13 Correct 7 ms 5088 KB correct
14 Correct 8 ms 5120 KB correct
15 Correct 7 ms 5128 KB correct
16 Correct 9 ms 5128 KB correct
17 Correct 7 ms 5128 KB correct
18 Correct 6 ms 5128 KB correct
19 Correct 9 ms 5128 KB correct
20 Correct 7 ms 5128 KB correct
21 Correct 8 ms 5128 KB correct
22 Correct 8 ms 5128 KB correct
23 Correct 9 ms 5128 KB correct
24 Correct 7 ms 5128 KB correct
25 Correct 11 ms 5128 KB correct
26 Correct 7 ms 5128 KB correct
27 Correct 9 ms 5128 KB correct
28 Correct 9 ms 5128 KB correct
29 Correct 8 ms 5128 KB correct
30 Correct 8 ms 5128 KB correct
31 Correct 9 ms 5128 KB correct
32 Correct 8 ms 5128 KB correct
33 Correct 9 ms 5128 KB correct
34 Correct 47 ms 6100 KB correct
35 Correct 42 ms 6192 KB correct
36 Correct 32 ms 6260 KB correct
37 Correct 13 ms 6260 KB correct
38 Correct 39 ms 6544 KB correct
39 Correct 35 ms 6764 KB correct
40 Correct 30 ms 6916 KB correct
41 Correct 40 ms 7052 KB correct
42 Correct 55 ms 7252 KB correct
43 Correct 20 ms 7252 KB correct
44 Correct 21 ms 7252 KB correct
45 Correct 24 ms 7252 KB correct
46 Correct 20 ms 7256 KB correct
47 Correct 16 ms 7256 KB correct
48 Correct 11 ms 7256 KB correct
49 Correct 12 ms 7256 KB correct
50 Correct 17 ms 7256 KB correct
51 Correct 22 ms 7528 KB correct
52 Correct 25 ms 7528 KB correct
53 Correct 20 ms 7588 KB correct
54 Correct 23 ms 7920 KB correct
55 Correct 25 ms 7920 KB correct
56 Correct 29 ms 8048 KB correct
57 Correct 22 ms 8092 KB correct

Subtask #4
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 8092 KB correct
2 Correct 9 ms 8092 KB correct
3 Correct 100 ms 10120 KB correct
4 Correct 163 ms 11092 KB correct
5 Correct 210 ms 11160 KB correct
6 Correct 144 ms 11160 KB correct
7 Correct 126 ms 11256 KB correct
8 Correct 115 ms 11256 KB correct
9 Correct 145 ms 11256 KB correct
10 Correct 151 ms 11256 KB correct
11 Correct 204 ms 11256 KB correct
12 Correct 148 ms 11256 KB correct
13 Correct 7 ms 11256 KB correct
14 Correct 145 ms 11256 KB correct
15 Correct 191 ms 11256 KB correct

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 4728 KB correct
2 Correct 7 ms 4968 KB correct
3 Correct 7 ms 4968 KB correct
4 Correct 7 ms 4968 KB correct
5 Correct 7 ms 4968 KB correct
6 Correct 6 ms 5020 KB correct
7 Correct 7 ms 5020 KB correct
8 Correct 7 ms 5020 KB correct
9 Correct 7 ms 5020 KB correct
10 Correct 7 ms 5084 KB correct
11 Correct 7 ms 5088 KB correct
12 Correct 7 ms 5088 KB correct
13 Correct 7 ms 5088 KB correct
14 Correct 8 ms 5120 KB correct
15 Correct 7 ms 5128 KB correct
16 Correct 9 ms 5128 KB correct
17 Correct 7 ms 5128 KB correct
18 Correct 6 ms 5128 KB correct
19 Correct 9 ms 5128 KB correct
20 Correct 7 ms 5128 KB correct
21 Correct 8 ms 5128 KB correct
22 Correct 8 ms 5128 KB correct
23 Correct 9 ms 5128 KB correct
24 Correct 7 ms 5128 KB correct
25 Correct 11 ms 5128 KB correct
26 Correct 7 ms 5128 KB correct
27 Correct 9 ms 5128 KB correct
28 Correct 9 ms 5128 KB correct
29 Correct 8 ms 5128 KB correct
30 Correct 8 ms 5128 KB correct
31 Correct 9 ms 5128 KB correct
32 Correct 8 ms 5128 KB correct
33 Correct 9 ms 5128 KB correct
34 Correct 47 ms 6100 KB correct
35 Correct 42 ms 6192 KB correct
36 Correct 32 ms 6260 KB correct
37 Correct 13 ms 6260 KB correct
38 Correct 39 ms 6544 KB correct
39 Correct 35 ms 6764 KB correct
40 Correct 30 ms 6916 KB correct
41 Correct 40 ms 7052 KB correct
42 Correct 55 ms 7252 KB correct
43 Correct 20 ms 7252 KB correct
44 Correct 21 ms 7252 KB correct
45 Correct 24 ms 7252 KB correct
46 Correct 20 ms 7256 KB correct
47 Correct 16 ms 7256 KB correct
48 Correct 11 ms 7256 KB correct
49 Correct 12 ms 7256 KB correct
50 Correct 17 ms 7256 KB correct
51 Correct 22 ms 7528 KB correct
52 Correct 25 ms 7528 KB correct
53 Correct 20 ms 7588 KB correct
54 Correct 23 ms 7920 KB correct
55 Correct 25 ms 7920 KB correct
56 Correct 29 ms 8048 KB correct
57 Correct 22 ms 8092 KB correct
58 Correct 6 ms 8092 KB correct
59 Correct 9 ms 8092 KB correct
60 Correct 100 ms 10120 KB correct
61 Correct 163 ms 11092 KB correct
62 Correct 210 ms 11160 KB correct
63 Correct 144 ms 11160 KB correct
64 Correct 126 ms 11256 KB correct
65 Correct 115 ms 11256 KB correct
66 Correct 145 ms 11256 KB correct
67 Correct 151 ms 11256 KB correct
68 Correct 204 ms 11256 KB correct
69 Correct 148 ms 11256 KB correct
70 Correct 7 ms 11256 KB correct
71 Correct 145 ms 11256 KB correct
72 Correct 191 ms 11256 KB correct
73 Correct 7 ms 11256 KB correct
74 Correct 184 ms 11256 KB correct
75 Correct 162 ms 11256 KB correct
76 Correct 87 ms 11256 KB correct
77 Correct 163 ms 11256 KB correct
78 Correct 168 ms 11256 KB correct
79 Correct 175 ms 11256 KB correct
80 Correct 174 ms 11256 KB correct
81 Correct 134 ms 11256 KB correct
82 Correct 169 ms 11256 KB correct
83 Correct 103 ms 11256 KB correct
84 Correct 70 ms 11256 KB correct
85 Correct 68 ms 11256 KB correct
86 Correct 65 ms 11256 KB correct
87 Correct 46 ms 11256 KB correct
88 Correct 42 ms 11256 KB correct
89 Correct 47 ms 11256 KB correct
90 Correct 39 ms 11256 KB correct
91 Correct 24 ms 11256 KB correct
92 Correct 21 ms 11256 KB correct
93 Correct 73 ms 11256 KB correct
94 Correct 69 ms 11256 KB correct
95 Correct 70 ms 11256 KB correct
96 Correct 49 ms 11256 KB correct
97 Correct 48 ms 11256 KB correct
98 Correct 64 ms 11256 KB correct
99 Correct 49 ms 11256 KB correct
100 Correct 33 ms 11256 KB correct
101 Correct 29 ms 11256 KB correct
102 Correct 74 ms 11256 KB correct
103 Correct 77 ms 11256 KB correct
104 Correct 81 ms 11256 KB correct
105 Correct 78 ms 11256 KB correct