# Help me in solving MISSP problem

### My issue

please help me why codechef is bombarding me with wrong answer when my code seems correct gives same sample output and very similar to accepted submissions

### My code

``````#include <iostream>
using namespace std;

int main() {
int t;
cin >> t;
while (t--) {
int n;
cin >> n;
int a[n];
for (int i = 0; i < n; i++) {
cin >> a[i];
}

for (int i = 0; i < n; i++) {
if(a[i]>0){
for (int j = i+1; j < n; j++) {
if (a[i] == a[j]&& i!=j) {
a[i] = a[j] = -1;
}
}
}
}

for (int i = 0; i < n; i++) {
if (a[i] != -1) {
cout << a[i] << " ";
}
}

cout << endl;
}
return 0;
}

``````

Problem Link: MISSP Problem - CodeChef

@prathamsch77
one case is missing when a[i] is 0 .

``````#include <iostream>
#include<bits/stdc++.h>
using namespace std;

bool sol(int n,string s,char c1,char c2){

for(int i=0;i<n-1;i++){
if(s[i]==s[i+1]&&s[i]==c1)
s[i]=s[i+1]=c2;
}
for(int i=0;i<n-1;i++){
if(s[i]!=s[i+1])
return 0;
}
return 1;
}
int main(){

int t;cin>>t;
while(t--){

int n;cin>>n;
string s;
cin>>s;

if(sol(n,s,'0','1')||sol(n,s,'1','0'))
cout<<"YES"<<endl;
else
cout<<"NO"<<endl;

}
return 0;
}``````