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Submission #881758

# Submission time Handle Problem Language Result Execution time Memory
881758 2023-12-01T20:28:44 Z andro Stove (JOI18_stove) C++14
50 / 100
 1000 ms 7640 KB 
#include <bits/stdc++.h>
#define int long long
using namespace std;
signed main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    int n,k;
    cin>>n>>k;
    int a[n+1];
    for(int i=1;i<=n;i++)cin>>a[i];
    int A[n+1];
    for(int i=0;i<=n;i++)A[i]=0;
    A[n]=1;
    int ans=0;
    ans+=a[n]+1-a[1];
    k--;
    while(k--){
        vector<pair<int,int>>v;
        int suf[n+1];
        suf[n]=n;
        for(int i=n-1;i>=1;i--){
            if(A[i])suf[i]=i;
            else suf[i]=suf[i+1];
        }
        int pret=1;
        for(int i=1;i<=n;i++){
            if(A[i]){
                pret=i;
                continue;
            }
            int R=ans;
            int sl=suf[i];
            R-=a[sl]+1-a[pret+1];
            R+=a[sl]+1-a[i+1];
            R+=a[i]+1-a[pret+1];
            v.push_back({R,i});
        }
        sort(v.begin(),v.end());
        int b=v[0].second;
        A[b]=1;
        int sl=-1;
        for(int i=b+1;i<=n;i++){
            if(A[i]){
                sl=i;
                break;
            }
        }
        pret=1;
        for(int i=1;i<b;i++){
            if(A[i]){
                pret=i;
            }
        }
        ans-=a[sl]+1-a[pret+1];
        ans+=a[sl]+1-a[b+1];
        ans+=a[b]+1-a[pret+1];
    }
    cout<<ans;
}
/*
a[i]+1-a[pret];
pret=i+1;

*/

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct

Subtask #2
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 2 ms 600 KB Output is correct
11 Correct 18 ms 604 KB Output is correct
12 Correct 149 ms 600 KB Output is correct
13 Correct 244 ms 604 KB Output is correct
14 Correct 269 ms 600 KB Output is correct
15 Correct 270 ms 648 KB Output is correct

Subtask #3
0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 2 ms 600 KB Output is correct
11 Correct 18 ms 604 KB Output is correct
12 Correct 149 ms 600 KB Output is correct
13 Correct 244 ms 604 KB Output is correct
14 Correct 269 ms 600 KB Output is correct
15 Correct 270 ms 648 KB Output is correct
16 Correct 99 ms 7372 KB Output is correct
17 Execution timed out 1006 ms 7640 KB Time limit exceeded
18 Halted 0 ms 0 KB -