oj.uz

Submission #128816

# Submission time Handle Problem Language Result Execution time Memory
128816 2019-07-11T09:51:16 Z zubec ICC (CEOI16_icc) C++14
0 / 100
 5 ms 504 KB 
#include "icc.h"
#include <bits/stdc++.h>
using namespace std;

int n;

mt19937 rnd(chrono::steady_clock::now().time_since_epoch().count());

int sz1, sz2, A[110], B[110];

int my_query(vector<int> &vec1, vector <int> &vec2){
    sz1 = sz2 = 0;
    for (int i = 0; i < vec1.size(); i++)
        A[sz1++] = vec1[i];
    for (int i = 0; i < vec2.size(); i++)
        B[sz2++] = vec2[i];
    return query(sz1, sz2, A, B);
}

int dsu[110];

int dsu_get(int v){
    if (v == dsu[v])
        return v;
    return dsu[v] = dsu_get(dsu[v]);
}

void dsu_unite(int a, int b){
    a = dsu_get(a);
    b = dsu_get(b);
    dsu[b] = a;
}

vector <int> g[110];

void run(int N){
    n = N;
    for (int i = 1; i <= n; i++){
        dsu[i] = i;
    }
    for (int tt = 1; tt < n; tt++){
        vector <int> vec;
        for (int i = 1; i <= n; i++)
            g[i].clear();
        for (int i = 1; i <= n; i++){
            vec.push_back(dsu_get(i));
            g[dsu_get(i)].push_back(i);
        }
        vec.erase(unique(vec.begin(), vec.end()), vec.end());
        while(1){
            shuffle(vec.begin(), vec.end(), rnd);
            int pos = vec.size()/2-1;

            vector <int> vec1, vec2;
            for (int j = 0; j <= pos; j++){
                for (int l = 0; l < g[vec[j]].size(); l++)
                    vec1.push_back(g[vec[j]][l]);
            }
            for (int j = pos+1; j < vec.size(); j++){
                for (int l = 0; l < g[vec[j]].size(); l++)
                    vec2.push_back(g[vec[j]][l]);
            }
            if (!my_query(vec1, vec2))
                continue;
            int l = 0, r = vec1.size()-1;
            while(l < r){
                int mid = (l+r)>>1;
                vector <int> cur;
                for (int j = l; j <= mid; j++)
                    cur.push_back(vec1[j]);
                if (my_query(cur, vec2))
                    r = mid; else
                    l = mid+1;
            }
            int a = vec1[l];
            l = 0, r = vec2.size();
            while(l < r){
                int mid = (l+r)>>1;
                vector <int> cur;
                for (int j = l; j <= mid; j++)
                    cur.push_back(vec2[j]);
                if (my_query(vec1, cur))
                    r = mid; else
                    l = mid+1;
            }
            int b = vec2[l];
            setRoad(a, b);
            dsu_unite(a, b);
            break;
        }
    }
}

/**

5
1 2
1 3
1 4
1 5

*/

Compilation message

icc.cpp: In function 'int my_query(std::vector<int>&, std::vector<int>&)':
icc.cpp:13:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < vec1.size(); i++)
                     ~~^~~~~~~~~~~~~
icc.cpp:15:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < vec2.size(); i++)
                     ~~^~~~~~~~~~~~~
icc.cpp: In function 'void run(int)':
icc.cpp:56:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
                 for (int l = 0; l < g[vec[j]].size(); l++)
                                 ~~^~~~~~~~~~~~~~~~~~
icc.cpp:59:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             for (int j = pos+1; j < vec.size(); j++){
                                 ~~^~~~~~~~~~~~
icc.cpp:60:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
                 for (int l = 0; l < g[vec[j]].size(); l++)
                                 ~~^~~~~~~~~~~~~~~~~~

Subtask #1
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 500 KB The query sets must be disjoint
2 Halted 0 ms 0 KB -

Subtask #2
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 504 KB The query sets must be disjoint
2 Halted 0 ms 0 KB -

Subtask #3
0 / 22.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 504 KB The query sets must be disjoint
2 Halted 0 ms 0 KB -

Subtask #4
0 / 21.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 504 KB The query sets must be disjoint
2 Halted 0 ms 0 KB -

Subtask #5
0 / 29.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 504 KB The query sets must be disjoint
2 Halted 0 ms 0 KB -

Subtask #6
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 504 KB The query sets must be disjoint
2 Halted 0 ms 0 KB -