1828A - Divisible Array - CodeForces Solution


constructive algorithms math

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C++ Code:

#include "bits/stdc++.h"
using namespace std;
typedef long long int ll;
void cpsolve();
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    ll t; cin>>t;
    while(t--) {
    cpsolve();
    cout<<'\n';
    }
}
void cpsolve() {
    ll n;
    cin>>n;
    ll x=(n*(n+1))/2-1;
    cout<<n-x%n<<" ";
    for(ll i=2;i<=n;i++){
        cout<<i<<" ";
    }
}


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