Submission #20172

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
20172	2016-03-01 05:56:45	suhgyuho_william	정전 (OJUZ10_blackout)	C++98	100 / 100	50 ms	2256 KiB

blackout

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#include <stdio.h>
#include <algorithm>
using namespace std;
#define lld long long
int N;
lld a[150010],L;
lld ans;
int main(){
    int i;
    lld e,s;
  //freopen("input.txt","r",stdin);
  scanf("%d %lld",&N,&L);
  for(i=1; i<=N; i++) scanf("%lld",&a[i]);
  sort(a+1,a+N+1);
  for(i=2; i<=N; i++){
    e = a[i-1]+L;
    s = a[i]-L;
    if(e <= s) continue;
    if(i > 2) s = max(s,a[i-2]+L);
    ans += (e-s);
  }
  printf("%lld",ans);
  return 0;
 
 
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• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 30 / 30
• Subtask 4: 40 / 40