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Submission #935819

# Submission time Handle Problem Language Result Execution time Memory
935819 2024-02-29T15:07:47 Z imarn Feast (NOI19_feast) C++14
4 / 100
 103 ms 12356 KB 
#include<bits/stdc++.h>
#define ll long long
#define pii pair<int,int>
#define pll pair<ll,ll>
#define f first
#define s second
#define pb push_back
#define all(x) x.begin(),x.end()
#define vi vector<int>
#define vvi vector<vi>
#define vp vector<pii>
using namespace std;
const int N=3e5+5;
ll a[N]{0};
pll dp[N];
pll mx[N];
pll solve(ll x,int n){
    dp[0]=mx[0]={0,0};
    for(int i=1;i<=n;i++){
        dp[i] = max(dp[i-1],{mx[i-1].f+a[i]-x,mx[i-1].s+1});
        mx[i] = max(mx[i-1],{dp[i].f-a[i],-dp[i].s});
    }
    return dp[n];
}
int main(){
    ios_base::sync_with_stdio(0);cin.tie(0);
    int n,k;cin>>n>>k;
    for(int i=1;i<=n;i++)cin>>a[i],a[i]+=a[i-1];
    ll l=0,r=1e12;
    while(l<r){
        ll m=(l+r)>>1;
        if(solve(m,n).s<=k)r=m;
        else l=m+1;
    }
    cout<<solve(l,n).f+l*k;
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 57 ms 12104 KB Output is correct
2 Correct 56 ms 12164 KB Output is correct
3 Correct 57 ms 12172 KB Output is correct
4 Correct 56 ms 11940 KB Output is correct
5 Correct 56 ms 12124 KB Output is correct
6 Correct 54 ms 12356 KB Output is correct
7 Correct 58 ms 12120 KB Output is correct
8 Correct 55 ms 12156 KB Output is correct
9 Correct 54 ms 12116 KB Output is correct
10 Correct 55 ms 12120 KB Output is correct

Subtask #2
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 48 ms 12120 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 18.0

# Verdict Execution time Memory Grader output
1 Incorrect 103 ms 12124 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 4444 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 4444 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 4444 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 57 ms 12104 KB Output is correct
2 Correct 56 ms 12164 KB Output is correct
3 Correct 57 ms 12172 KB Output is correct
4 Correct 56 ms 11940 KB Output is correct
5 Correct 56 ms 12124 KB Output is correct
6 Correct 54 ms 12356 KB Output is correct
7 Correct 58 ms 12120 KB Output is correct
8 Correct 55 ms 12156 KB Output is correct
9 Correct 54 ms 12116 KB Output is correct
10 Correct 55 ms 12120 KB Output is correct
11 Incorrect 48 ms 12120 KB Output isn't correct
12 Halted 0 ms 0 KB -