Submission #643945

#	Time	Username	Problem	Language	Result	Execution time	Memory
643945		mychecksedad	Necklace (Subtask 1-3) (BOI19_necklace1)	C++17	25 / 85	1581 ms	320 KiB

necklace

/* Author : Mychecksdead */
#include<bits/stdc++.h>
using namespace std;
typedef long long int ll;
typedef long double ld;
#define MOD (1000000000+7)
#define MOD1 (998244353)
#define PI 3.1415926535
#define pb push_back
#define setp() cout << setprecision(15)
#define all(x) x.begin(), x.end()
#define debug(x) cerr << #x << " is " << x << '\n';
const int N = 1e6+100, M = 1e5+10, F = 2147483646, K = 20;


int n, m;
string a, b;

bool is_equal(string x, string y){

    for(int c = 0; c < x.length(); ++c){
        bool o = 1;
        for(int i = 0; i < x.length(); ++i){
            if(x[i] != y[(i+c)%int(x.length())]){
                o = 0;
                break;
            }
        }
        if(o){
            return o;
        }
    }

    reverse(all(y));

    for(int c = 0; c < x.length(); ++c){
        bool o = 1;
        for(int i = 0; i < x.length(); ++i){
            if(x[i] != y[(i+c)%int(x.length())]){
                o = 0;
                break;
            }
        }
        if(o){
            return o;
        }
    }

    return 0;
}

void solve(){
    cin >> a >> b;
    n = a.length();
    m = b.length();
    int len = 0, i1 = 0, i2 = 0;
    for(int i = 0; i < n; ++i){
        for(int j = i; j < n; ++j){
            int l = j - i;
            for(int k = 0; k < m - l; ++k){
                if(is_equal(a.substr(i, l + 1), b.substr(k, l + 1))){
                    if(len<l+1){
                        len=l+1, i1=i, i2=k;
                    }
                }
            }
        }
    }
    cout << len << '\n' << i1 << ' ' << i2 ;
}





int main(){
    cin.tie(0); ios::sync_with_stdio(0);
    int T = 1, aa;
    // cin >> T;aa=T;
    while(T--){
        // cout << "Case #" << aa-T << ": ";
        solve();
        cout << '\n';
    }
    return 0;
 
}

Compilation message (stderr)

necklace.cpp: In function 'bool is_equal(std::string, std::string)':
necklace.cpp:21:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |     for(int c = 0; c < x.length(); ++c){
      |                    ~~^~~~~~~~~~~~
necklace.cpp:23:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |         for(int i = 0; i < x.length(); ++i){
      |                        ~~^~~~~~~~~~~~
necklace.cpp:36:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |     for(int c = 0; c < x.length(); ++c){
      |                    ~~^~~~~~~~~~~~
necklace.cpp:38:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   38 |         for(int i = 0; i < x.length(); ++i){
      |                        ~~^~~~~~~~~~~~
necklace.cpp: In function 'int main()':
necklace.cpp:78:16: warning: unused variable 'aa' [-Wunused-variable]
   78 |     int T = 1, aa;
      |                ^~

• Subtask 1: 25 / 25
• Subtask 2: 0 / 20
• Subtask 3: 0 / 40