Submission #257622

#TimeUsernameProblemLanguageResultExecution timeMemory
257622uacoder123Rima (COCI17_rima)C++14
140 / 140
404 ms150256 KiB
#include <bits/stdc++.h> #include <ext/pb_ds/assoc_container.hpp> using namespace std; using namespace __gnu_pbds; #define F first #define S second #define FOR(i,a,b) for (auto i = (a); i <= (b); ++i) #define NFOR(i,a,b) for(auto i = (a); i >= (b); --i) #define all(x) (x).begin(), (x).end() #define sz(x) int(x.size()) #define mp(i,a) make_pair(i,a) #define pb(a) push_back(a) #define bit(x,b) (x&(1LL<<b)) typedef int lli; typedef pair <lli,lli> ii; typedef pair <lli,ii> iii; typedef vector <lli> vi; typedef tree<pair<lli,int>,null_type,less<pair<lli,int>>,rb_tree_tag,tree_order_statistics_node_update> ordered_set; int arr[3000001][26]; vi al[3000001]; int val[3000001]; int dp[3000001][2],co=1,ans=0; void ins(string &s) { int cur=0; for(int i=0;i<s.size();++i) { if(arr[cur][s[i]-'a']==0) { al[cur].pb(co); arr[cur][s[i]-'a']=co++; } cur=arr[cur][s[i]-'a']; if(i==s.size()-1) val[cur]++; } } void dfs(int node) { int v=0; dp[node][0]=val[node]; for(int i=0;i<al[node].size();++i) { dfs(al[node][i]); v+=val[al[node][i]]; } int max1=-1,max2=-1; for(int i=0;i<al[node].size();++i) if(max1==-1||dp[al[node][i]][0]>dp[al[node][max1]][0]) max1=i; for(int i=0;i<al[node].size();++i) if(i!=max1&&(max2==-1||dp[al[node][max2]][0]<dp[al[node][i]][0])) max2=i; if(max1!=-1) { for(int i=0;i<al[node].size();++i) { if(val[al[node][i]]==0) continue; dp[al[node][i]][1]=dp[al[node][max1]][0]+v-val[al[node][max1]]; if(max2!=-1) ans=max(ans,dp[al[node][i]][1]+dp[al[node][max2]][0]-val[al[node][max2]]+val[node]); else ans=max(ans,dp[al[node][i]][1]+val[node]); } } for(int i=0;i<al[node].size();++i) if(val[node]!=0) dp[node][0]=max(dp[node][0],val[node]+dp[al[node][i]][1]); } int main() { ios_base::sync_with_stdio(false); cin.tie(NULL); int n; string s; cin>>n; for(int i=0;i<n;++i) { cin>>s; reverse(all(s)); ins(s); } dfs(0); cout<<ans<<endl; return(0); }

Compilation message (stderr)

rima.cpp: In function 'void ins(std::__cxx11::string&)':
rima.cpp:27:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
       for(int i=0;i<s.size();++i)
                   ~^~~~~~~~~
rima.cpp:35:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         if(i==s.size()-1)
            ~^~~~~~~~~~~~
rima.cpp: In function 'void dfs(int)':
rima.cpp:43:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
       for(int i=0;i<al[node].size();++i)
                   ~^~~~~~~~~~~~~~~~
rima.cpp:49:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
       for(int i=0;i<al[node].size();++i)
                   ~^~~~~~~~~~~~~~~~
rima.cpp:52:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
       for(int i=0;i<al[node].size();++i)
                   ~^~~~~~~~~~~~~~~~
rima.cpp:57:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int i=0;i<al[node].size();++i)
                     ~^~~~~~~~~~~~~~~~
rima.cpp:68:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
       for(int i=0;i<al[node].size();++i)
                   ~^~~~~~~~~~~~~~~~
#Verdict Execution timeMemoryGrader output
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