제출 #830471

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
830471		vjudge1	Safety (NOI18_safety)	C++17	0 / 100	36 ms	2260 KiB

safety

#include<bits/stdc++.h>
#define ll long long
#define fi first
#define se second
using namespace std;
const int nmax = 200002;
ll S[nmax], dup[nmax];
int main() {
    int N;
    ll H;
    cin >> N >> H;
    for(int i=1; i<=N; i++) {
        cin >> S[i];
        dup[i]=S[i];
    }
    int idx=2;
    ll sem;
    ll cost = 0;
    while(idx<=N) {
        if(abs(dup[idx]-dup[idx-1])>H) {
            sem = abs(dup[idx]-dup[idx-1])-H;
            cost+=sem;
            if(dup[idx] > dup[idx-1]) {
                dup[idx]-=sem;
            }
            if(dup[idx] < dup[idx-1]) {
                dup[idx]+=sem;
            }
        }
        idx++;
    }
    cout << cost << endl;
    return 0;
}

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• Subtask 3: 0 / 9
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