Submission #71187

#	Time	Username	Problem	Language	Result	Execution time	Memory
71187		vanogam	구간 성분 (KOI15_interval)	C++14	61 / 100	1067 ms	43088 KiB

interval

#include<bits/stdc++.h>
#pragma GCC optimize ("Ofast")
using namespace std;
long long s,d[30],f[1502],g,h,j,k,mod=1000000000736009,mar=1507;
int i,a,l,n,m;
string x,z;
unordered_set<long long> q[2002];
main(){
    //ios::sync_with_stdio(0);
    d[0]=1;
    for(i=1;i<30;i++){
        d[i]=(d[i-1]*mar)%mod;
    }
    char c;
    while((c=getchar())!='\n') x+=c;
    while((c=getchar())!='\n') z+=c;
    //if(x.size()>z.size()) swap(x,z);
    //cout<<"*"<<x<<" "<<z<<"*";
    n=x.size();
    for(i=0;i<x.size();i++) x[i]-='a';
    for(i=0;i<z.size();i++) {z[i]-='a';f[i]=i;}
    random_shuffle(f,f+z.size());
    for(i=0;i<n;i++){
        h=0;
        for(a=i;a<n;a++){
            h+=d[x[a]];
            if(h>mod) h-=mod;
            q[a-i].insert(h);
        }
    }
    m=z.size();
    for(i=0;i<m;i++){
        h=0;//cout<<f[i]<<" ";
        //f=min(z.size(),i+x.size());
        for(a=f[i];a<m;a++){
            //if(a>i+x.size()) break;

            h+=d[z[a]];
            if(h>mod) h-=mod;
            if(l<a-f[i]+1 && q[a-f[i]].find(h)!=q[a-f[i]].end()) l=a-f[i]+1;
        }
    }

    cout<<l;
}

Compilation message (stderr)

interval.cpp:8:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main(){
      ^
interval.cpp: In function 'int main()':
interval.cpp:20:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(i=0;i<x.size();i++) x[i]-='a';
             ~^~~~~~~~~
interval.cpp:21:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(i=0;i<z.size();i++) {z[i]-='a';f[i]=i;}
             ~^~~~~~~~~
interval.cpp:26:22: warning: array subscript has type 'char' [-Wchar-subscripts]
             h+=d[x[a]];
                      ^
interval.cpp:38:22: warning: array subscript has type 'char' [-Wchar-subscripts]
             h+=d[z[a]];
                      ^

• Subtask 1: 7 / 7
• Subtask 2: 23 / 23
• Subtask 3: 31 / 31
• Subtask 4: 0 / 39