Submission #946296

#	Time	Username	Problem	Language	Result	Execution time	Memory
946296		Zena_Hossam	Beautiful row (IZhO12_beauty)	C++14	100 / 100	1420 ms	205732 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 long long
//#define ll1 int
#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;
ll r[(1<<20)+5][25];
ll solve(ll uu,ll k,ll o){
    ll u=uu;u=(u|(1<<k));
    if(r[uu][k]!=-1)return r[uu][k];r[uu][k]=0;
    //cout<<k<<" ";
if(__builtin_popcount(u)==n){
   return r[uu][k]=1;

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

    if((u&(1<<(s[k][i]))))continue;
    x+=solve(u,s[k][i],o+1);
}return r[uu][k]=x;
}
int main()
{
    //freopen("stdin.in","r",stdin);freopen("stdout.out","w",stdout);
    ll T=1;fi
    //cin>>T;ll oo=0;
    while(T--)
    {for(ll i=0;i<(1<<20)+5;i++){
    for(ll j=0;j<=20;j++)r[i][j]=-1;
    }
       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); }
        }
       }ll c=0;
       for(ll i=0;i<n;i++){
       c+=solve(0,i,0);//cout<<"\n";
       }cout<<c;
    }
}

Compilation message (stderr)

beauty.cpp: In function 'long long int solve(long long int, long long int, long long int)':
beauty.cpp:16:5: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   16 |     if(r[uu][k]!=-1)return r[uu][k];r[uu][k]=0;
      |     ^~
beauty.cpp:16:37: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   16 |     if(r[uu][k]!=-1)return r[uu][k];r[uu][k]=0;
      |                                     ^
beauty.cpp:22:13: 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]
   22 | for(ll i=0;i<s[k].sz;i++){
      |             ^

• Subtask 1: 100 / 100