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답안 #345543

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
345543 2021-01-07T14:43:57 Z Nursik Feast (NOI19_feast) C++14
4 / 100
 49 ms 1516 KB 
#include <bits/stdc++.h>

#define f first
#define s second
#define ll long long
#define pb push_back
#define all(v) v.begin(),v.end() 
#define ld long double

using namespace std; 
 
void data() {
	#ifdef NURS
        freopen("main.in", "r", stdin);
        freopen("main.out", "w", stdout);
    #endif	
} 
void win()
{	
	ios_base::sync_with_stdio(0),
	cin.tie(0),cout.tie(0);
}

int block = 400;
const ld eps = 1e-6; 

const int N = 1e6 + 500;
const int mod = 1e9 + 7;

const ll hh = 100010683;
const ll hh2 = 150005819;

int n, k, g, pos;
int a[N];
ll s, ans;
int main()
{
	data();              
	win();        
	cin >> n >> k;
	bool was = 0;
	for (int i = 1; i <= n; i++)
	{
		cin >> a[i];
		was = was | (a[i] < 0), s += a[i];
		if (a[i] < 0)
			g++, pos = i;
	}
	//first subtask
	if (was == 0)
	{
		cout << s << '\n';
		return 0;
	}
	//second subtask
	if (g == 1 && k >= 2)
	{
		cout << s - a[pos] << '\n';
		return 0;	
	}
	else if (g == 1 && k == 1)
	{
		ans = max(ans, s - a[pos]);
		s = 0;
		for (int i = 1; i < pos; i++)
			s += a[i];
		ans = max(ans, s), s = 0;
		for (int i = pos + 1; i <= n; i++)
			s += a[i];
		ans = max(ans, s);
		cout << ans << '\n';
		return 0;
	}
}

Subtask #1
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 33 ms 1516 KB Output is correct
2 Correct 48 ms 1516 KB Output is correct
3 Correct 37 ms 1516 KB Output is correct
4 Correct 33 ms 1516 KB Output is correct
5 Correct 48 ms 1516 KB Output is correct
6 Correct 48 ms 1516 KB Output is correct
7 Correct 49 ms 1516 KB Output is correct
8 Correct 47 ms 1516 KB Output is correct
9 Correct 35 ms 1488 KB Output is correct
10 Correct 34 ms 1516 KB Output is correct

Subtask #2
0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 25 ms 1516 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 43 ms 1516 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 364 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 364 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 364 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Correct 33 ms 1516 KB Output is correct
2 Correct 48 ms 1516 KB Output is correct
3 Correct 37 ms 1516 KB Output is correct
4 Correct 33 ms 1516 KB Output is correct
5 Correct 48 ms 1516 KB Output is correct
6 Correct 48 ms 1516 KB Output is correct
7 Correct 49 ms 1516 KB Output is correct
8 Correct 47 ms 1516 KB Output is correct
9 Correct 35 ms 1488 KB Output is correct
10 Correct 34 ms 1516 KB Output is correct
11 Incorrect 25 ms 1516 KB Output isn't correct
12 Halted 0 ms 0 KB -