Submission #130030

#	Time	Username	Problem	Language	Result	Execution time	Memory
130030		OptxPrime	Toys (CEOI18_toy)	C++11	0 / 100	211 ms	262144 KiB

toy

#include <iostream>
#include <cmath>
#include<vector>
#include <algorithm>
#include <utility>
#include<stack>
#include<queue>
#include<map>
#include <fstream>
#include<set>

using namespace std;

#define pb push_back
#define mp make_pair
#define ll long long

    //map<int,bool> res;
    map<int, set<int>> sums;
    int maxn=100000;
    set<int> fac[10000010];

    void num( int x )
    {
        sums[x].insert( x-1 );
        if(  x>maxn ){      ///pravo velik broj, kakvih ima najvise stotinjak
            for( int i=2;i<=sqrt(x);i++ ){
                if( ( x%i )!= 0 ) continue;
            if( sums[i].size() == 0 )num(i);
            if( sums[ x/i ].size() == 0 ) num( (x/i) );
           for( auto j:sums[i] ){
                for( auto k:sums[x/i] ){
                     sums[x].insert( j+k );
                }
           }
        }
        }
        else{
            for( auto i:fac[x] ){
                 //   cout <<x << " " << i << " et  " <<endl;
                if( i>sqrt(x) ) break;
                if( sums[i].size() == 0  ) num(i);
                if( sums[x/i].size() == 0 ) num(x/i);
                for( auto j:sums[ i ] ){
                    for( auto k:sums[x/i] ){
    //                       cout << x << " " << i << " " << j << " " << k <<endl;
                        sums[x].insert( j+k );
                    }
                }
            }
        }


    }

    int main()
    {
        ios_base::sync_with_stdio(false);
        cin.tie(NULL);

        int n;
        cin>>n;
        for( int i=2;i<=maxn;i++ ){
            for( int j=i;j<=maxn;j+=i ){
               //     cout << j <<endl;
                fac[j].insert( i );
            }
        }
      //  cout <<  " bral;e " <<endl;
        num(n);
        /// brza faktorizacija? jer za svaki broj mi idemo do korjena pa cak i za 10^9 samo su nam bitni do korjena
        cout<<sums[n].size()<<endl;
        for( auto i:sums[n] )
            cout<<i<<" ";
            cout<<endl;

      return 0;
    }

Compilation message (stderr)

toy.cpp: In function 'int main()':
toy.cpp:73:9: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
         for( auto i:sums[n] )
         ^~~
toy.cpp:75:13: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
             cout<<endl;
             ^~~~

• Subtask 1: 0 / 19
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 20
• Subtask 5: 0 / 21