Submission #201737

#	Time	Username	Problem	Language	Result	Execution time	Memory
201737		mdn2002	Savez (COCI15_savez)	C++14	0 / 120	1091 ms	23580 KiB

savez

#include<bits/stdc++.h>
using namespace std;
const int mod=1e9+7;
vector<string>s;
map<string,vector<int> >mp;
map<string,int>dp,on;
int n;
int f(int x)
{
    if(on[s[x]]!=0)return dp[s[x]];
    int ans=0;
    for(int i=0;i<mp[s[x]].size();i++)
    {
        int to=mp[s[x]][i];
        if(x>=to)continue;
        ans=max(ans,f(to)+1);
    }
    on[s[x]]++;
    return dp[s[x]]=ans;
}
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    //freopen("empty.in","r",stdin);
    //freopen("empty.out","w",stdout);
    cin>>n;
    for(int k=0;k<n;k++)
    {
        string st,pr,sf;
        cin>>st;
        for(int i=0,j=st.size()-1;i<st.size();i++,j--)
        {
            pr.push_back(st[i]);
            sf.push_back(st[j]);
            if(pr==sf)mp[pr].push_back(k);
        }
        s.push_back(st);
    }
    int ans=0;
    for(int i=0;i<n;i++)ans=max(ans,f(i)+1);
    cout<<ans;
}

Compilation message (stderr)

savez.cpp: In function 'int f(int)':
savez.cpp:12:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<mp[s[x]].size();i++)
                 ~^~~~~~~~~~~~~~~~
savez.cpp: In function 'int main()':
savez.cpp:33:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int i=0,j=st.size()-1;i<st.size();i++,j--)
                                   ~^~~~~~~~~~

• Subtask 1: 0 / 12
• Subtask 2: 0 / 12
• Subtask 3: 0 / 12
• Subtask 4: 0 / 12
• Subtask 5: 0 / 12
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• Subtask 10: 0 / 12