This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#pragma GCC optimize("Ofast")
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std ;
using namespace __gnu_pbds;
#define endl '\n'
#define ordered_set tree<pair < int ,int >,null_type,less<pair < int ,int >>,rb_tree_tag,tree_order_statistics_node_update>
#define all(a) a.begin() , a.end()
#define alr(a) a.rbegin() , a.rend()
bool check(string x){
return(x[0] >= '0' && x[0] <= '9');
}
signed main(){
ios_base::sync_with_stdio(0), cin.tie(0),cout.tie(0);
int n ;
cin >> n ;
vector < string > a(n) , b(n);
map < string , vector < int > > ind1 , ind2 ;
for( auto &i : a )
cin >> i;
for( auto &i : b )
cin >> i;
for( int i = 0 ; i < n ; i++ ){
if(!check(a[i])) ind1[a[i]].push_back(i);
if(!check(b[i])) ind2[b[i]].push_back(i);
}
for( int i = 0 ; i < n ; i++ ){
bool f1 = check(a[i]) , f2 = check(b[i]);
// cout << f1 << ' ' << f2 << endl ;
if( f1 && f2 ){
if(a[i] != b[i])
return cout << "NE" , 0;
}
else{
vector < int > tmpind1 = ind1[(f1 ? b[i] : a[i] )];
vector < int > tmpind2 = ind2[(f1 ? b[i] : a[i] )];
ind1[(f1 ? b[i] : a[i] )].clear();
ind2[(f1 ? b[i] : a[i] )].clear();
for(int idx = 0 ; idx < tmpind1.size() ; idx++){
a[tmpind1[idx]] = (f1 ? a[i] : b[i]);
ind1[(f1 ? a[i] : b[i])].push_back(tmpind1[idx]);
}
for(int idx = 0 ; idx < tmpind2.size() ; idx++){
b[tmpind2[idx]] = (f1 ? a[i] : b[i]);
ind2[(f1 ? a[i] : b[i])].push_back(tmpind2[idx]);
}
if(check(a[i]) && check(b[i])){
if(a[i] != b[i]) return cout << "NE" , 0;
}
}
}
// for(auto i :a)cout << i << ' '; cout <<endl;
// for(auto i :b)cout << i << ' '; cout <<endl;
cout << (a == b? "DA" : "NE");
return 0 ;
}
Compilation message (stderr)
zamjena.cpp: In function 'int main()':
zamjena.cpp:42:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
42 | for(int idx = 0 ; idx < tmpind1.size() ; idx++){
| ~~~~^~~~~~~~~~~~~~~~
zamjena.cpp:46:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
46 | for(int idx = 0 ; idx < tmpind2.size() ; idx++){
| ~~~~^~~~~~~~~~~~~~~~
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