Submission #36161

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
36161	2017-12-06 05:23:13	cheater2k	Bootfall (IZhO17_bootfall)	C++14	100 / 100	496 ms	5164 KiB

bootfall

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#include <bits/stdc++.h>
using namespace std;
const int N = 505;
const int MAX = N * N;
int n, a[N];
int sum;
int dp[MAX]; // knapsack
int tmp[MAX]; // for solve(pos)
int check[MAX];
void solve(int pos) {
  for (int i = 0; i <= sum; ++i) tmp[i] = dp[i];
  for (int i = 0; i <= sum; ++i) {
    // we do not use a[pos]
    if (i >= a[pos]) {
      tmp[i] -= tmp[i - a[pos]];
    }
  }
  for (int i = 0; i <= sum; ++i) {
    if (tmp[i] != 0 && a[pos] + 2 * i - sum >= 0) 
      check[a[pos] + 2 * i - sum]++;
  }
}
int main() {
  ios_base::sync_with_stdio(false); cin.tie(0);
  cin >> n;
  for (int i = 1; i <= n; ++i) cin >> a[i];
 
 
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• Subtask 1: 6 / 6
• Subtask 2: 7 / 7
• Subtask 3: 15 / 15
• Subtask 4: 16 / 16
• Subtask 5: 21 / 21
• Subtask 6: 35 / 35