Submission #944491

#	Time	Username	Problem	Language	Result	Execution time	Memory
944491		Zena_Hossam	Beautiful row (IZhO12_beauty)	C++14	0 / 100	1 ms	344 KiB

beauty

#include <bits/stdc++.h>
using namespace std;
#define fi ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
//#define ll double
#define ll int
//#define ll1 long long
#define F first
#define S second
#define sz size()
#define all(s) s.begin(),s.end()
#define all1(s) s.rbegin(),s.rend()
ll c=0,n;vector<vector<ll>>s;
void solve(vector<ll>v,ll k,ll o){vector<ll>e=v;e[k]=1;//cout<<k<<" ";
if(o==n-1){
    c++;return;

}
for(ll i=0;i<s[k].sz;i++){

    if(e[s[k][i]])continue;
    solve(e,s[k][i],o+1);
}return;
}
int main()
{
    freopen("stdin.in","r",stdin);freopen("stdout.out","w",stdout);
    ll T=1;fi
    //cin>>T;ll oo=0;
    while(T--)
    {
       cin>>n;
       ll arr[n];s.resize(n+5);
       for(ll i=0;i<n;i++){
        cin>>arr[i];
       }ll m[n+5]={};ll d[n+5]={};
       for(ll i=0;i<n;i++){
            ll a=arr[i];ll p=0;
            while(a!=0){
                if(a%2==1)p++;
                a/=2;
            }
            m[i]=p;
            ll b=arr[i];ll pp=0;
            while(b!=0){
                if(b%3==1)pp++;
                b/=3;
            }
            d[i]=pp;
       }
       for(ll i=0;i<n;i++){
        for(ll j=i+1;j<n;j++){if(i==j)continue;
            if(m[i]==m[j]){s[i].push_back(j);//cout<<i<<" "<<j<<"k\n";
            s[j].push_back(i);}
            else if(d[i]==d[j]){s[i].push_back(j);//cout<<i<<" "<<j<<"k\n";
            s[j].push_back(i); }
        }
       }vector<ll>r(n+9,0);
       for(ll i=0;i<n;i++){
       solve(r,i,0);//cout<<"\n";
       }cout<<c;
    }
}

Compilation message (stderr)

beauty.cpp: In function 'void solve(std::vector<int>, int, int)':
beauty.cpp:18:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   18 | for(ll i=0;i<s[k].sz;i++){
      |             ^
beauty.cpp: In function 'int main()':
beauty.cpp:26:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   26 |     freopen("stdin.in","r",stdin);freopen("stdout.out","w",stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
beauty.cpp:26:42: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   26 |     freopen("stdin.in","r",stdin);freopen("stdout.out","w",stdout);
      |                                   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 100