oj.uz

답안 #595991

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
595991 2022-07-14T08:46:32 Z Tenis0206 Feast (NOI19_feast) C++11
12 / 100
 108 ms 14940 KB 
#include <bits/stdc++.h>
#define int long long

using namespace std;

const int oo = 0x3f3f3f3f;

int n,k;
int v[300005];
int sp[300005];

pair<int,int> dp[300005][2];

pair<int,int> get_val(int c)
{
    /* int Max = 0, nrval = 0;
     int Max_pref = 0, nrval_pref = 0;
     for(int i=1;i<=n;i++)
     {
         dp[i].first = Max_pref + sp[i] - c;
         dp[i].second = nrval_pref + 1;
         if(dp[i].first > Max || (dp[i].first==Max && dp[i].second < nrval))
         {
             Max = dp[i].first;
             nrval = dp[i].second;
         }
         if(Max - sp[i] > Max_pref || (Max - sp[i]==Max_pref && nrval < nrval_pref))
         {
             Max_pref = Max - sp[i];
             nrval_pref = nrval;
         }
     }
     */
    dp[0][1].first = -oo;
    for(int i=1; i<=n+1; i++)
    {
        if(dp[i-1][0]>=dp[i-1][1])
        {
            dp[i][0] = dp[i-1][0];
        }
        else
        {
            dp[i][0] = dp[i-1][1];
        }
        if(pair<int,int>{dp[i-1][1].first + v[i], dp[i-1][1].second} >= pair<int,int>{dp[i-1][0].first + v[i] - c, dp[i-1][0].second + 1})
        {
            dp[i][1] = {dp[i-1][1].first + v[i], dp[i-1][1].second};
        }
        else
        {
            dp[i][1] = {dp[i-1][0].first + v[i] - c, dp[i-1][0].second + 1};
        }
    }
    return dp[n+1][0];
}

signed main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);
    cin>>n>>k;
    for(int i=1; i<=n; i++)
    {
        cin>>v[i];
        sp[i] = sp[i-1] + v[i];
    }
    int st = 0;
    int dr = oo;
    while(st<=dr)
    {
        int mij = (st + dr) >> 1;
        pair<int,int> val = get_val(mij);
        if(val.second==k)
        {
            cout<<val.first + k * mij<<'\n';
            return 0;
        }
        if(val.second<k)
        {
            dr = mij - 1;
        }
        else
        {
            st = mij + 1;
        }
    }
    pair<int,int> val = get_val(st);
    cout<<val.first + k * st<<'\n';
    return 0;
}

Subtask #1
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 67 ms 13952 KB Output is correct
2 Correct 65 ms 14220 KB Output is correct
3 Correct 69 ms 14376 KB Output is correct
4 Correct 64 ms 14280 KB Output is correct
5 Correct 64 ms 14204 KB Output is correct
6 Correct 65 ms 13960 KB Output is correct
7 Correct 66 ms 13960 KB Output is correct
8 Correct 64 ms 14256 KB Output is correct
9 Correct 65 ms 14000 KB Output is correct
10 Correct 66 ms 14056 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 33 ms 14004 KB Output is correct
2 Correct 26 ms 14368 KB Output is correct
3 Correct 26 ms 13984 KB Output is correct
4 Correct 57 ms 14164 KB Output is correct
5 Correct 37 ms 14608 KB Output is correct
6 Correct 27 ms 14660 KB Output is correct
7 Correct 61 ms 14920 KB Output is correct
8 Correct 40 ms 14940 KB Output is correct
9 Correct 33 ms 14500 KB Output is correct
10 Correct 58 ms 14928 KB Output is correct

Subtask #3
0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 108 ms 14296 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Correct 67 ms 13952 KB Output is correct
2 Correct 65 ms 14220 KB Output is correct
3 Correct 69 ms 14376 KB Output is correct
4 Correct 64 ms 14280 KB Output is correct
5 Correct 64 ms 14204 KB Output is correct
6 Correct 65 ms 13960 KB Output is correct
7 Correct 66 ms 13960 KB Output is correct
8 Correct 64 ms 14256 KB Output is correct
9 Correct 65 ms 14000 KB Output is correct
10 Correct 66 ms 14056 KB Output is correct
11 Correct 33 ms 14004 KB Output is correct
12 Correct 26 ms 14368 KB Output is correct
13 Correct 26 ms 13984 KB Output is correct
14 Correct 57 ms 14164 KB Output is correct
15 Correct 37 ms 14608 KB Output is correct
16 Correct 27 ms 14660 KB Output is correct
17 Correct 61 ms 14920 KB Output is correct
18 Correct 40 ms 14940 KB Output is correct
19 Correct 33 ms 14500 KB Output is correct
20 Correct 58 ms 14928 KB Output is correct
21 Incorrect 108 ms 14296 KB Output isn't correct
22 Halted 0 ms 0 KB -