Submission #14364

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
14364	2015-05-12 13:15:01	Fakeable	정전 (OJUZ10_blackout)	C++98	100 / 100	51 ms	1668 KiB

blackout

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#include<cstdio>
#include<algorithm>
using namespace std;
const int MAX_N = 150050;
const int INF = -2100000000;
int n,k,a[MAX_N],covered = INF;
long long ans;
int front, rear;
void input() {
    scanf("%d %d",&n,&k);
    for(int i=0;i<n;i++) scanf("%d",&a[i]);
    sort(a,a+n);
}
void solve() {
    for(int i=0;i<n-1;i++) {
        if(a[i+1]-a[i] >= 2*k) continue;
        rear = a[i] + k;
        if(rear <= covered) continue;
        front = max(a[i+1] - k, covered);
        ans += (long long)max(0, rear-front);
        covered = rear;
    }
    printf("%lld\n",ans);
}
int main() {
    input();
    solve();
}
 
 
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• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 30 / 30
• Subtask 4: 40 / 40