oj.uz

Submission #812609

# Submission time Handle Problem Language Result Execution time Memory
812609 2023-08-07T09:32:10 Z TheSahib ICC (CEOI16_icc) C++14
0 / 100
 1 ms 340 KB 
#include <bits/stdc++.h>
#include "icc.h"

#define ll long long
#define oo 1e9
#define pii pair<int, int>

using namespace std;

const int MAX = 105;
int n;

set<int> comps;

int par[MAX];
vector<int> st[MAX];
int get(int node){
    if(par[node] < 0) return node;
    return par[node] = get(par[node]);
}

int unite(int a, int b){
    a = get(a);
    b = get(b);
    if(a == b) return false;

    if(-par[a] < -par[b]) swap(a, b);
    for(int c:st[b]){
        st[a].push_back(c);
    }
    par[a] += par[b];
    par[b] = a;
    comps.erase(b);
    return false;
}

bool queryComp(vector<int> a, vector<int> b){
    vector<int> tmp1, tmp2;
    for(int c:a){
        for(int x:st[c]){
            tmp1.push_back(x);
        }
    }
    for(int c:b){
        for(int x:st[c]){
            tmp2.push_back(x);
        }
    }
    return query(a.size(), b.size(), a.data(), b.data());
}

void f(vector<int>& a, vector<int>& b){
    if(a.size() == 1 && b.size() == 1) return;

    int l = 0, r = a.size() - 1;
    while(l < r){
        int mid = (l + r) / 2;
        vector<int> tmp;
        for(int i = l; i <= mid; ++i){
            tmp.push_back(a[i]);
        }
        if(query(tmp.size(), b.size(), tmp.data(), b.data())){
            r = mid;
        }
        else{
            l = mid + 1;
        }
    }
    int c = a[l];
    a.clear();
    a.push_back(c);
    if(b.size() != 1){
        f(b, a);
    }
}

void run(int N){
    n = N;
    for (int i = 0; i < n; i++)
    {
        par[i] = -1;
        st[i].push_back(i);
        comps.insert(i);
    }
    for (int k = 0; k < N - 1; k++)
    {
        vector<int> v;
        for(int a:comps){
            v.push_back(a);
        }
        vector<int> v1, v2;
        while(true){
            random_shuffle(v.begin(), v.end());
            int mid = (v.size() - 1) / 2;
            vector<int> tmp1, tmp2;
            for(int i = 0; i < v.size(); ++i){
                if(i <= mid){
                    tmp1.push_back(v[i]);
                }
                else{
                    tmp2.push_back(v[i]);
                }
            }
            if(queryComp(tmp1, tmp2)){
                for(int c:tmp1){
                    for(int x:st[c]){
                        v1.push_back(x);
                    }
                }
                for(int c:tmp2){
                    for(int x:st[c]){
                        v2.push_back(x);
                    }
                }
                break;
            }
        }
        f(v1, v2);
        setRoad(v1[0], v2[0]);
        unite(v1[0], v2[0]);
    }
}

Compilation message

icc.cpp: In function 'void run(int)':
icc.cpp:96:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   96 |             for(int i = 0; i < v.size(); ++i){
      |                            ~~^~~~~~~~~~

Subtask #1
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 340 KB Query cities not in range [1, n]
2 Halted 0 ms 0 KB -

Subtask #2
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 340 KB Query cities not in range [1, n]
2 Halted 0 ms 0 KB -

Subtask #3
0 / 22.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 340 KB Query cities not in range [1, n]
2 Halted 0 ms 0 KB -

Subtask #4
0 / 21.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 340 KB Query cities not in range [1, n]
2 Halted 0 ms 0 KB -

Subtask #5
0 / 29.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 340 KB Query cities not in range [1, n]
2 Halted 0 ms 0 KB -

Subtask #6
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 340 KB Query cities not in range [1, n]
2 Halted 0 ms 0 KB -