Submission #980158


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#include <bits/stdc++.h>
using namespace std;

#define _p(...) (void)printf(__VA_ARGS__)
#define forr(x,arr) for(auto&& x:arr)
#define _overload3(_1,_2,_3,name,...) name
#define _rep2(i,n) _rep3(i,0,n)
#define _rep3(i,a,b) for(int i=int(a);i<int(b);++i)
#define rep(...) _overload3(__VA_ARGS__,_rep3,_rep2,)(__VA_ARGS__)
#define _rrep2(i,n) _rrep3(i,0,n)
#define _rrep3(i,a,b) for(int i=int(b)-1;i>=int(a);i--)
#define rrep(...) _overload3(__VA_ARGS__,_rrep3,_rrep2,)(__VA_ARGS__)
#define all(x) (x).begin(), (x).end()
#define bit(n) (1LL<<(n))
#define sz(x) ((int)(x).size())
#define fst first
#define snd second
using ll=long long;using pii=pair<int,int>;using vb=vector<bool>;
using vi=vector<int>;using vvi=vector<vi>;using vvvi=vector<vvi>;
using vl=vector<ll>;using vvl=vector<vl>;using vvvl=vector<vvl>;
using vd=vector<double>;using vvd=vector<vd>;using vvvd=vector<vvd>;
using vpii=vector<pii>;using vvpii=vector<vpii>;using vvvpii=vector<vvpii>;
template <typename T> T read() {T t; cin >> t; return t;}

template<class T> bool amin(T &a, const T &b) { if (b < a) { a = b; return 1; } return 0; }

void Main() {
  int n = read<int>();
  int e = read<int>();
  int t = read<int>();
  vector<int> X(n);
  rep(i, n) X[i] = read<int>();

  // sub
  if (n > 2000) return;

  const ll inf = 1e18+7;

  vl dp(n+2, inf);
  dp[0] = 0;

  rep(i, n) if (dp[i] < inf) {
    //cout<<"dp["<<i<<"]: "<<dp[i]<<endl;
    int pos = (i == 0 ? 0 : X[i-1]);

    rep(j, i, n+1) {
      int a = X[j] - pos;
      int b = X[j] - X[i];
      int c;
      if (b * 2 >= t) c = 0;
      else c = t - b * 2;
      //_p("i:%d, j:%d: %d,%d,%d\n", i,j,a,b,c);
      amin(dp[j + 1], dp[i] + a + 2LL * b + c);
    }
  }

  //cout << "dp:"; rep(ii,sz(dp)) cout << ' ' << dp[ii]; cout << endl;

  ll ans = dp[n] + abs(e - X[n-1]);

  cout << ans << endl;
}
int main() { cin.tie(nullptr); ios::sync_with_stdio(false); Main(); return 0; }

Submission Info

Submission Time
Task D - Shik and Game
User shiratty8
Language C++14 (GCC 5.4.1)
Score 600
Code Size 1975 Byte
Status WA
Exec Time 14 ms
Memory 640 KB

Judge Result

Set Name Sample Subtask1 All
Score / Max Score 0 / 0 600 / 600 0 / 600
Status
AC × 3
AC × 23
AC × 23
WA × 41
Set Name Test Cases
Sample 0_00.txt, 0_01.txt, 0_02.txt
Subtask1 0_00.txt, 0_01.txt, 0_02.txt, 1_00.txt, 1_01.txt, 1_02.txt, 1_03.txt, 1_04.txt, 1_05.txt, 1_06.txt, 1_07.txt, 1_08.txt, 1_09.txt, 1_10.txt, 1_11.txt, 1_12.txt, 1_13.txt, 1_14.txt, 1_15.txt, 1_16.txt, 1_17.txt, 1_18.txt, 1_19.txt
All 0_00.txt, 0_01.txt, 0_02.txt, 1_00.txt, 1_01.txt, 1_02.txt, 1_03.txt, 1_04.txt, 1_05.txt, 1_06.txt, 1_07.txt, 1_08.txt, 1_09.txt, 1_10.txt, 1_11.txt, 1_12.txt, 1_13.txt, 1_14.txt, 1_15.txt, 1_16.txt, 1_17.txt, 1_18.txt, 1_19.txt, 2_00.txt, 2_01.txt, 2_02.txt, 2_03.txt, 2_04.txt, 2_05.txt, 2_06.txt, 2_07.txt, 2_08.txt, 2_09.txt, 2_10.txt, 2_11.txt, 2_12.txt, 2_13.txt, 2_14.txt, 2_15.txt, 2_16.txt, 2_17.txt, 2_18.txt, 2_19.txt, 2_20.txt, 2_21.txt, 2_22.txt, 2_23.txt, 2_24.txt, 2_25.txt, 2_26.txt, 2_27.txt, 2_28.txt, 2_29.txt, 2_30.txt, 2_31.txt, 2_32.txt, 2_33.txt, 2_34.txt, 2_35.txt, 2_36.txt, 2_37.txt, 2_38.txt, 2_39.txt, 2_40.txt
Case Name Status Exec Time Memory
0_00.txt AC 2 ms 256 KB
0_01.txt AC 2 ms 256 KB
0_02.txt AC 2 ms 256 KB
1_00.txt AC 5 ms 256 KB
1_01.txt AC 4 ms 256 KB
1_02.txt AC 5 ms 256 KB
1_03.txt AC 5 ms 256 KB
1_04.txt AC 4 ms 256 KB
1_05.txt AC 4 ms 256 KB
1_06.txt AC 4 ms 256 KB
1_07.txt AC 4 ms 256 KB
1_08.txt AC 5 ms 256 KB
1_09.txt AC 4 ms 256 KB
1_10.txt AC 6 ms 256 KB
1_11.txt AC 4 ms 256 KB
1_12.txt AC 4 ms 256 KB
1_13.txt AC 6 ms 256 KB
1_14.txt AC 4 ms 256 KB
1_15.txt AC 4 ms 256 KB
1_16.txt AC 4 ms 256 KB
1_17.txt AC 4 ms 256 KB
1_18.txt AC 3 ms 256 KB
1_19.txt AC 5 ms 256 KB
2_00.txt WA 11 ms 640 KB
2_01.txt WA 11 ms 640 KB
2_02.txt WA 11 ms 640 KB
2_03.txt WA 11 ms 640 KB
2_04.txt WA 11 ms 640 KB
2_05.txt WA 11 ms 640 KB
2_06.txt WA 11 ms 640 KB
2_07.txt WA 11 ms 640 KB
2_08.txt WA 11 ms 640 KB
2_09.txt WA 11 ms 640 KB
2_10.txt WA 13 ms 640 KB
2_11.txt WA 13 ms 640 KB
2_12.txt WA 13 ms 640 KB
2_13.txt WA 13 ms 640 KB
2_14.txt WA 13 ms 640 KB
2_15.txt WA 13 ms 640 KB
2_16.txt WA 13 ms 640 KB
2_17.txt WA 13 ms 640 KB
2_18.txt WA 13 ms 640 KB
2_19.txt WA 13 ms 640 KB
2_20.txt WA 13 ms 640 KB
2_21.txt WA 14 ms 640 KB
2_22.txt WA 13 ms 640 KB
2_23.txt WA 13 ms 640 KB
2_24.txt WA 13 ms 640 KB
2_25.txt WA 13 ms 640 KB
2_26.txt WA 13 ms 640 KB
2_27.txt WA 13 ms 640 KB
2_28.txt WA 13 ms 640 KB
2_29.txt WA 13 ms 640 KB
2_30.txt WA 13 ms 640 KB
2_31.txt WA 13 ms 640 KB
2_32.txt WA 13 ms 640 KB
2_33.txt WA 13 ms 640 KB
2_34.txt WA 13 ms 640 KB
2_35.txt WA 13 ms 640 KB
2_36.txt WA 13 ms 640 KB
2_37.txt WA 13 ms 640 KB
2_38.txt WA 13 ms 640 KB
2_39.txt WA 13 ms 640 KB
2_40.txt WA 13 ms 640 KB