Submission #295331

#	Time	Username	Problem	Language	Result	Execution time	Memory
295331		erd1	Triple Jump (JOI19_jumps)	C++14	19 / 100	2128 ms	202352 KiB

jumps

#include<bits/stdc++.h>
#define ff first
#define ss second
#define pb push_back
#define all(x) (x).begin(), (x).end()
using namespace std;
typedef int64_t lld;
typedef pair<int, int> pii;

array<array<int, 5000>, 5000> ans;
vector<int> v;

signed main(){
  int n;
  cin >> n;
  for(int i = 0; i < n; i++){
    int a; cin >> a;
    v.pb(a);
  }
  for(int i = 0; i < n; i++)
    for(int j = i+2, mx = -1; j < n; j++) {
      if((i+j)%2 == 0) mx = max(mx, v[i+j>>1]);
      ans[i][j] = v[i]+v[j]+mx;
    }
  for(int l = 3; l < n; l++)
    for(int i = 0, j = l; j < n; i++, j++)
      ans[i][j] = max({ans[i][j], ans[i+1][j], ans[i][j-1]});
  int q;
  cin >> q;
  while(q--){
    int a, b; cin >> a >> b; cout << ans[a-1][b-1] << endl;
  }
}

Compilation message (stderr)

jumps.cpp: In function 'int main()':
jumps.cpp:22:40: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   22 |       if((i+j)%2 == 0) mx = max(mx, v[i+j>>1]);
      |                                       ~^~

• Subtask 1: 5 / 5
• Subtask 2: 14 / 14
• Subtask 3: 0 / 27
• Subtask 4: 0 / 54