Can anybody explain it to me? Why this is happening?↵
/*#include<bits/stdc++.h>↵
using namespace std;↵
#define ll long long ↵
#define endl "\n"↵
int main() ↵
{ ↵
int t;↵
cin>>t;↵
while(t--){↵
ll n,k;↵
cin>>n>>k;↵
vector<ll> b;↵
b.assign(k,0);↵
for(ll i=0;i<n;i++){↵
ll a;↵
cin>>a;↵
if((a%k)!=0)↵
b[k-(a%k)]++;↵
}↵
ll maxi=1,index=0;↵
for(ll i=1;i<k;i++){↵
if(maxi<=b[i]){↵
maxi=b[i];↵
index=i;↵
}↵
}↵
for(ll i=0;i<maxi-1;i++){↵
index+=k;↵
}↵
if(index==0)↵
cout<<index<<endl;↵
else cout<<index+1<<endl;↵
↵
↵
}↵
return 0;↵
}*/
https://codeforces.com/contest/1374/submission/85763917↵
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