#include <bits/stdc++.h>
#define N 1000005
#define ll long long int
#define MP make_pair
#define pb push_back
#define ppb pop_back
#define sp " "
#define endl "\n"
#define fi first
#define se second
#define ii pair<int,int>
#define lli pair<ll,ll>
#define fast cin.tie(0);cout.tie(0);ios_base::sync_with_stdio(false)
#define fast2 freopen ("myfile.in","r",stdin);freopen ("myfile.out","w",stdout);
#define mod 1000000007
#define fs(x,y) for(int i=1;i<=y;i++) cin>>x[i]
#define fo(i,x,y) for(int i=x;i<=y;i++)
using namespace std;
ll n,m,ar[N],sum,k,tut[N],mark[N];
int main()
{
fast;
cin>>n>>m>>k;
fs(ar,m);
sort(ar+1,ar+1+m);
for(int i=1;i<=m;i++)
for(int j=ar[i]-k;j<=ar[i]+k && j<=n;j++)
mark[j]=1;
ll last=INT_MIN;
// fo(i,1,n)
// cout<<mark[i]<<sp;
// cout<<endl;
for(int i=1;i<=n;i++)
{
if(i-last>k*2 && !mark[i])
last=i,sum++;
}
cout<<sum;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
512 KB |
Output is correct |
2 |
Correct |
3 ms |
384 KB |
Output is correct |
3 |
Correct |
2 ms |
384 KB |
Output is correct |
4 |
Correct |
4 ms |
384 KB |
Output is correct |
5 |
Correct |
3 ms |
384 KB |
Output is correct |
6 |
Correct |
3 ms |
384 KB |
Output is correct |
7 |
Correct |
2 ms |
384 KB |
Output is correct |
8 |
Runtime error |
4 ms |
640 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
9 |
Correct |
3 ms |
384 KB |
Output is correct |
10 |
Correct |
2 ms |
384 KB |
Output is correct |