Submission #71158

#	Time	Username	Problem	Language	Result	Execution time	Memory
71158		khohko	구간 성분 (KOI15_interval)	C++17	100 / 100	234 ms	26476 KiB

interval

#include <bits/stdc++.h>
#pragma GCC optimize("O3")
using namespace std;
#define ll long long
#define pb push_back
#define fr first
#define sc second
#define MAX ((ll)(1e12+100))
#define MX ((ll)(1e6+100))
#define ARRS ((ll)(2e6+100))
#define HS ((ll)(1049))
#define MOD ((ll)(1000000861))
#define EP ((double)(1e-9))
#define LG 21
#define mul(a,b) a=((a)*(b))%MOD
using namespace std;

string s,t;

ll pw[50][2000];
vector<ll> mp[2000];
vector<ll> mp1[2000];
ll ct[50];

int main(){
	#ifdef KHOKHO
		freopen("in.in","r",stdin);
		freopen("out.out","w",stdout);
	#endif
	cin>>s>>t;
	for(int i=0; i<40; i++)
		for(int j=0; j<1600; j++)
			pw[i][j]=(((ll)rand()<<48ll)+((ll)rand()<<32ll)+((ll)rand()<<16ll)+(ll)rand());
	int pas=0;
	for(int i=0; i<s.size(); i++){
		ll hs=0;
		for(int i=0; i<40; i++)ct[i]=0;
		for(int j=i; j<s.size(); j++){
			hs^=pw[s[j]-'a'][ct[s[j]-'a']++];
			mp[j-i].pb(hs);
		//	mp[hs]=j-i+1;
		}
	}

	for(int i=0; i<t.size(); i++){
		ll hs=0;
		for(int i=0; i<40; i++)ct[i]=0;
		for(int j=i; j<t.size(); j++){
			hs^=pw[t[j]-'a'][ct[t[j]-'a']++];
			mp1[j-i].pb(hs);
			//if(mp[j-i].find(hs)!=mp[j-i].end())
				//pas=max(pas,j-i+1);
		}
	}
	for(int i=1600; i>=0; i--){
		sort(mp[i].begin(),mp[i].end());
		sort(mp1[i].begin(),mp1[i].end());
		ll j=0;
		for(int k=0; k<mp[i].size(); k++){
			while(j<mp1[i].size()&&mp1[i][j]<mp[i][k])j++;
			//cout<<mp[i][k]<<" "<<mp1[i][j]<<endl;
			if(j<mp1[i].size()&&mp[i][k]==mp1[i][j])pas=max(pas,i+1);
		}
		if(pas)break;
	}
	cout<<pas;


}

Compilation message (stderr)

interval.cpp: In function 'int main()':
interval.cpp:35:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0; i<s.size(); i++){
               ~^~~~~~~~~
interval.cpp:38:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int j=i; j<s.size(); j++){
                ~^~~~~~~~~
interval.cpp:45:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0; i<t.size(); i++){
               ~^~~~~~~~~
interval.cpp:48:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int j=i; j<t.size(); j++){
                ~^~~~~~~~~
interval.cpp:59:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int k=0; k<mp[i].size(); k++){
                ~^~~~~~~~~~~~~
interval.cpp:60:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    while(j<mp1[i].size()&&mp1[i][j]<mp[i][k])j++;
          ~^~~~~~~~~~~~~~
interval.cpp:62:8: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    if(j<mp1[i].size()&&mp[i][k]==mp1[i][j])pas=max(pas,i+1);
       ~^~~~~~~~~~~~~~

• Subtask 1: 7 / 7
• Subtask 2: 23 / 23
• Subtask 3: 31 / 31
• Subtask 4: 39 / 39