Submission #9930647

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Source Code Expand

#include<bits/stdc++.h>
#define rep(i,n) for(int i=0;i<(int)(n);i++)
#define rep2(i,a,b) for(int i=a;i<b;i++)
using namespace std;

int n,ans;
string s;

main()
{
        cin>>n>>s;

        rep2(i,0,10)
        {
                rep2(j,0,10)
                {
                        rep2(k,0,10)
                        {
                                char a='0'+i,
                                     b='0'+j,
                                     c='0'+k;
                                string t="";
                                t.push_back(a);
                                t.push_back(b);
                                t.push_back(c);
                                if(s.find(a)!=string::npos)
                                {
                                        if(s.find(b,s.find(a)+1)!=string::npos)
                                        {
                                                if(s.find(c,s.find(b,s.find(a)+1)+1)!=string::npos)
                                                {
                                                        ans++;
                                                        //cout<<t<<endl;
                                                }
                                        }
                                }
                        }
                }
        }
        cout<<ans<<endl;
}

Submission Info

Judge Result