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Submission #524005

# Submission time Handle Problem Language Result Execution time Memory
524005 2022-02-08T14:19:51 Z DanerZein Discharging (NOI20_discharging) C++14
38 / 100
 372 ms 14676 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int MAX_N=1e6+10;
struct line{
  ll m,b;
  line(ll mm,ll bb){
    m=mm; b=bb;
  }
  ll eval(ll x){
    return m*x+b;
  }
  long double intersect(line l){
    return (long double)(b-l.b)/(l.m-m);
  }
};
ll val[MAX_N];
int main(){
  int n; cin>>n;
  for(int i=1;i<=n;i++){
    cin>>val[i];
  }
  deque<line> dq;
  dq.push_front({0,0});
  ll ans=0;
  for(int i=1;i<=n;i++){
    int t=dq.size();
    line nl={-i,ans};
    while(t>=2 && nl.intersect(dq[t-2])<=dq[t-1].intersect(dq[t-2])){
      dq.pop_back();
      t--;
    }
    dq.push_back(nl);
    while(dq.size()>=2 && dq[0].eval(val[i])>=dq[1].eval(val[i]))
      dq.pop_front();
    ans=dq.front().eval(val[i])+val[i]*(n+1);
  }
  cout<<ans<<endl;
}

Subtask #1
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Incorrect 0 ms 204 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #2
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 304 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 304 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 251 ms 13104 KB Output is correct
17 Correct 262 ms 13976 KB Output is correct
18 Correct 227 ms 12740 KB Output is correct
19 Correct 259 ms 13860 KB Output is correct
20 Correct 263 ms 13824 KB Output is correct
21 Correct 263 ms 13824 KB Output is correct
22 Correct 248 ms 13584 KB Output is correct
23 Correct 276 ms 14528 KB Output is correct
24 Correct 261 ms 13892 KB Output is correct
25 Correct 290 ms 14352 KB Output is correct
26 Correct 295 ms 14676 KB Output is correct
27 Correct 254 ms 13216 KB Output is correct
28 Correct 271 ms 14020 KB Output is correct
29 Correct 277 ms 14220 KB Output is correct
30 Correct 280 ms 14408 KB Output is correct

Subtask #4
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 372 ms 12524 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Incorrect 0 ms 204 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #6
0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Incorrect 0 ms 204 KB Output isn't correct
4 Halted 0 ms 0 KB -