제출 #158379

#제출 시각아이디문제언어결과실행 시간메모리
158379dcjRasvjeta (COCI17_rasvjeta)C++14
10 / 50
2 ms384 KiB
#include <iostream> using namespace std; int main() { int N, M, K, X; cin >> N; cin >> M; cin >> K; int br=0, x, y=2*K+1; cin >> X; br+=(X-K)/y+1-bool(X<=K); x=X; while(--M>1) { cin >> X; br+=(X-x)/y; x=X; } cin >> X; br+=(N-X-K)/y+1-(N-X<=K); cout << br; return 0; }
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