Submission #676480

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
676480	2022-12-31 03:35:41	penguin133	Feast (NOI19_feast)	C++17	100 / 100	152 ms	15100 KiB

feast

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#include <bits/stdc++.h>
using namespace std;
#define int long long
#define pi pair<int, int>
#define pii pair<int, pi>
#define fi first
#define se second
#define getchar_unlocked _getchar_nolock
int n, k, A[300005];
pi dp[300005][2];
int ans;
int c(int x){
  dp[0][0] = {0, 0};
  dp[0][1] = {-1e18, 0};
  for(int i=1;i<=n;i++){
    dp[i][0] = max(dp[i-1][0], dp[i-1][1]);
    dp[i][1] = max({make_pair(dp[i-1][0].fi + A[i] - x, dp[i-1][0].se + 1), make_pair(dp[i-1][1].fi + A[i], dp[i-1][1].se)});
  }
  pi tmp = max(dp[n][0], dp[n][1]);
  if(tmp.se <= k)ans = max(ans, tmp.fi + tmp.se * x);
  cerr << x << " " << tmp.fi << " " << tmp.se << '\n';
  return tmp.se;
}
void solve(){
  cin >> n >> k;
 
 
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Compilation message (stderr)

feast.cpp:41:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   41 | main(){
      | ^~~~

• Subtask 1: 4 / 4
• Subtask 2: 8 / 8
• Subtask 3: 18 / 18
• Subtask 4: 10 / 10
• Subtask 5: 11 / 11
• Subtask 6: 20 / 20
• Subtask 7: 29 / 29