Submission #448364

#	Time	Username	Problem	Language	Result	Execution time	Memory
448364		nickmet2004	구간 성분 (KOI15_interval)	C++11	0 / 100	76 ms	16328 KiB

interval

#include<bits/stdc++.h>
using namespace std;
int A = 987654323;
int B = 1e9 + 9;
int C = 985201597;
int D = 660353359;
int pol1[26];
int pol2[26];
vector<pair<int,int> > sa[1509];
vector<pair<int,int> > sb[1509];
main(){
    pol1[0] = 1;
    for(int i = 1; i < 26; i ++)
        pol1[i] = (long long)pol1[i - 1] * (long long)(A*A) % B;
    pol2[0] = 1;
    for(int i = 1; i < 26; i ++)
        pol2[i] = (long long)pol2[i - 1] * (long long)(C*C) % D;
    //for(int i = 1; i <= 26; ++i)cout << pol1[i] << " ";cout << endl;
    //for(int i = 1; i <= 26; ++i)cout << pol2[i] << " ";cout << endl;
    int n, m;
    string a, b;
    cin >> a >> b;
    n = a.size(), m = b.size();
    for(int i = 0; i < n; i++){
        int H1 = 0, H2 = 0;
        for(int j = i; j < n; j++){
            H1 += pol1[a[j] - 'a'];
            H2 += pol2[a[j] - 'a'];
            if(H1 >= B) H1 -= B;
            if(H2 >= D) H2 -= D;
            sa[j - i + 1].push_back({H1,H2});
        }
    }
    int ans = 0;
     for(int i = 0; i < m; i++){
        int H1 = 0, H2 = 0;
        for(int j = i; j < m; j++){
            H1 += pol1[b[j] - 'a'];
            H2 += pol2[b[j] - 'a'];
            if(H1 >= B) H1 -= B;
            if(H2 >= D) H2 -= D;
            sb[j - i + 1].push_back({H1,H2});
            }
        }
    for(int k = min(m,n); k >=0; k--){
        sort(sa[k].begin(), sa[k].end());
        sort(sb[k].begin(), sb[k].end());
        int j = 0;
        for(int i = 0 ;i < sa[k].size(); i++)
        {
            while(j < sb[k].size() && sb[k][j] < sa[k][i]) j++;
            if(sb[k][j] == sa[k][i]){
                cout<<k<<endl;
                return 0;
            }
        }
    }
    cout << ans << endl;


}

Compilation message (stderr)

interval.cpp:11:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   11 | main(){
      | ^~~~
interval.cpp: In function 'int main()':
interval.cpp:49:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   49 |         for(int i = 0 ;i < sa[k].size(); i++)
      |                        ~~^~~~~~~~~~~~~~
interval.cpp:51:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   51 |             while(j < sb[k].size() && sb[k][j] < sa[k][i]) j++;
      |                   ~~^~~~~~~~~~~~~~

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