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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. int n, m, j, r, a, ret;
  4. int main(){
  5.     cin >> n >> m >> j;
  6.     int l = 1;
  7.     for(int i = 0; i < j; i++){
  8.         cin >> a;
  9.         r = l + m - 1;
  10.         if(a >= l && a <= r) continue;
  11.         else if(a < l){
  12.             l = a;
  13.             ret += l - a;
  14.         } else if(a > r){
  15.             l += a - r;
  16.             ret += a - r;
  17.         }
  18.     }
  19.     cout << ret << '\n';
  20. }
Success #stdin #stdout 0.01s 5316KB
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stdin
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5 1
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stdout
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4
https://ideone.com/VlEwMo
language:
C++ (gcc 8.3)
created:
4 hours ago
visibility:
public

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