Submission #955103

#	Time	Username	Problem	Language	Result	Execution time	Memory
955103		edogawa_something	Sparklers (JOI17_sparklers)	C++17	0 / 100	1 ms	348 KiB

sparklers

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef vector<ll> vii;
typedef pair<ll,ll> pii;
#define F first
#define S second
#define pb push_back
#define eb emplace_back
#define all(v) v.begin(),v.end()
#define pow poww
const ll M=1e6+10;
const ll inf=2e18;
const ll mod=1e9+7;
ll pow(ll x,ll y){
  ll res=1;
  x%=mod; 
  while(y>0){
    if((y&1))
    res*=x,res%=mod;
    x*=x,x%=mod;
    y=(y>>1);
  }
  return res;
}
ll n,k,t,a[M];
int main(){
  ios_base::sync_with_stdio(0),cin.tie(0);
  int TC=1;
  //cin>>TC;
  while(TC--){
    cin>>n>>k>>t;
    for(int i=0;i<n;i++){
      cin>>a[i];
    }
    cout<<(((a[n-1]+n-2)/(n-1)+t-1)/t+1)/2<<'\n';
  }
  return 0;
}
/*

*/  

• Subtask 1: 0 / 30
• Subtask 2: 0 / 20
• Subtask 3: 0 / 50