Submission #292067

#	Time	Username	Problem	Language	Result	Execution time	Memory
292067		Abdelrahman	Bosses (BOI16_bosses)	C++17	0 / 100	2 ms	512 KiB

bosses

#include <bits/stdc++.h>
#define endl '\n'
#define modulo 1000000007
#define int long long
#pragma GCC optimize("-Ofast")
#define float double
#define PI 3.141592653589793238462643383279502884
#define sinDegrees(x) sin((x) * PI / 180.0)
#define tanDegrees(x) tan((x) * PI / 180.0)
#define atanDegrees(x) atan(x)* 180.0 / PI

using namespace std;

unordered_map<int, vector<int> > mp;
vector<pair<int, int> >vs;
unordered_map<int, int>empInd;
bool visited[5001] = {0}, touched[5001]={0};
int finale = 0, done=0;

bool compare(pair<int, int> a, pair<int, int> b)
{
    if (a.first!=b.first)
    {
        return a.first>b.first;
    }
    else
    {
        return a.second<b.second;
    }
}

int solve(int emp)
{
    if (visited[emp])
        return 0;
    visited[emp] = 1;
    done++;
    touched[emp] = 1;
    int current = 0;
    vector<pair<int, int> > myEmp;
    for (int i=0;i<mp[emp].size();i++)
    {
        int mpNum=mp[emp][i];
        if (touched[mpNum])
        {
            continue;
        }
        touched[mpNum] = 1;
        myEmp.push_back({empInd[mpNum], mpNum});
    }
    if (myEmp.size()==0)
    {
        finale+=1;
        return 1;
    }
    sort(myEmp.begin(), myEmp.end(), compare);
    for (int i=0;i<mp[emp].size();i++)
    {
        current+=solve(myEmp[i].second);
    }
    finale+=current+1;
    return current+1;

}

int32_t main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);

    int n;
    cin>>n;

    for (int i=0;i<n;i++)
    {
        int a;
        cin>>a;
        while (a--)
        {
            int b;
            cin>>b;
            mp[b-1].push_back(i);
        }
    }

    for (int i=0;i<n;i++)
    {
        vs.push_back({mp[i].size(), i});
    }

    sort(vs.begin(), vs.end(), compare);

    for (int i=0;i<n;i++)
    {
        empInd[vs[i].second] = vs[i].first;
    }

    int mini=INT_MAX;

    for (int i=0;i<n;i++)
    {
        solve(vs[i].second);
        if (done==n)
        {
            mini = min(finale, mini);
        }

        for (int i=0;i<5002;i++)
        {
            visited[i]=0;
            touched[i]=0;
        }
        finale = 0;
        done=0;
    }


    cout<<mini;



}

Compilation message (stderr)

bosses.cpp: In function 'long long int solve(long long int)':
bosses.cpp:41:19: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   41 |     for (int i=0;i<mp[emp].size();i++)
      |                  ~^~~~~~~~~~~~~~~
bosses.cpp:57:19: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   57 |     for (int i=0;i<mp[emp].size();i++)
      |                  ~^~~~~~~~~~~~~~~
bosses.cpp: In function 'int32_t main()':
bosses.cpp:110:23: warning: iteration 5001 invokes undefined behavior [-Waggressive-loop-optimizations]
  110 |             visited[i]=0;
      |             ~~~~~~~~~~^~
bosses.cpp:108:23: note: within this loop
  108 |         for (int i=0;i<5002;i++)
      |                      ~^~~~~
cc1plus: warning: 'void* __builtin_memset(void*, int, long unsigned int)' forming offset 5002 is out of the bounds [0, 5001] of object 'visited' with type 'bool [5001]' [-Warray-bounds]
bosses.cpp:17:6: note: 'visited' declared here
   17 | bool visited[5001] = {0}, touched[5001]={0};
      |      ^~~~~~~
cc1plus: warning: 'void* __builtin_memset(void*, int, long unsigned int)' forming offset 5002 is out of the bounds [0, 5001] of object 'touched' with type 'bool [5001]' [-Warray-bounds]
bosses.cpp:17:27: note: 'touched' declared here
   17 | bool visited[5001] = {0}, touched[5001]={0};
      |                           ^~~~~~~
cc1plus: warning: 'void* __builtin_memset(void*, int, long unsigned int)' forming offset 5002 is out of the bounds [0, 5001] of object 'visited' with type 'bool [5001]' [-Warray-bounds]
bosses.cpp:17:6: note: 'visited' declared here
   17 | bool visited[5001] = {0}, touched[5001]={0};
      |      ^~~~~~~
cc1plus: warning: 'void* __builtin_memset(void*, int, long unsigned int)' forming offset 5002 is out of the bounds [0, 5001] of object 'touched' with type 'bool [5001]' [-Warray-bounds]
bosses.cpp:17:27: note: 'touched' declared here
   17 | bool visited[5001] = {0}, touched[5001]={0};
      |                           ^~~~~~~

• Subtask 1: 0 / 22
• Subtask 2: 0 / 45
• Subtask 3: 0 / 33