Sanalista

input/code.cpp:3:26: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main(int n, int x, char c){cin>>n;x=(n++);bool a['\u001A']={0x0};while(n--){ while((c = getchar_unlocked()) > '`') a[c-97]^=1;for(int i = 0; i < 26; i++)if(a[i]){x--;bzero(a+i,26-i);break;}}cout<<x<<endl;}
                          ^
input/code.cpp:3:1: warning: second argument of 'int main(int, int, char)' should be 'char **' [-Wmain]
 main(int n, int x, char c){cin>>n;x=(n++);bool a['\u001A']={0x0};while(n--){ while((c = getchar_unlocked()) > '`') a[c-97]^=1;for(int i = 0; i < 26; i++)if(a[i]){x--;bzero(a+i,26-i);break;}}cout<<x<<endl;}
 ^~~~
input/code.cpp:3:1: warning: third argument of 'int main(int, int, char)' should probably be 'char **' [-Wmain]

#include <bits/stdc++.h>
using namespace std;
main(int n, int x, char c){cin>>n;x=(n++);bool a['\u001A']={0x0};while(n--){ while((c = getchar_unlocked()) > '`') a[c-97]^=1;for(int i = 0; i < 26; i++)if(a[i]){x--;bzero(a+i,26-i);break;}}cout<<x<<endl;}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED