oj.uz

Submission #312033

# Submission time Handle Problem Language Result Execution time Memory
312033 2020-10-12T07:54:32 Z Rainbowbunny Split the sequence (APIO14_sequence) C++17
0 / 100
 9 ms 2688 KB 
#include <bits/stdc++.h>
#define mp make_pair
#define eb emplace_back
#define fi first
#define se second
using namespace std;
using cd = complex <double>;
 
const int N = (1 << 20) + 5;
const long long INF = 1e9;
const int mod = 1e9 + 7;//1e9 + 7;//786433;//998244353;
const double Pi = acos(-1);
 
void Fastio()
{
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
}

int n, k;
long long s[100005];
long long dp[100005][2];

signed main()
{
	Fastio();
	cin >> n >> k;
	for(int i = 1; i <= n; i++)
	{
		cin >> s[i];
		s[i] += s[i - 1];
	}
	for(int i = 1; i <= k; i++)
	{
		int pt = i - 1;
		for(int j = i; j <= n; j++)
		{
			while(dp[pt][i & 1 ^ 1] + (s[j] - s[pt]) * s[pt] < dp[pt + 1][i & 1 ^ 1] + (s[j] - s[pt + 1]) * s[pt + 1] and pt + 1 < j)
			{
				pt++;
			}
			dp[j][i & 1] = dp[pt][i & 1 ^ 1] + s[pt] * (s[j] - s[pt]);
		}
	}
	cout << dp[n][k & 1];
}

Compilation message

sequence.cpp: In function 'int main()':
sequence.cpp:39:19: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
   39 |    while(dp[pt][i & 1 ^ 1] + (s[j] - s[pt]) * s[pt] < dp[pt + 1][i & 1 ^ 1] + (s[j] - s[pt + 1]) * s[pt + 1] and pt + 1 < j)
      |                 ~~^~~
sequence.cpp:39:68: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
   39 |    while(dp[pt][i & 1 ^ 1] + (s[j] - s[pt]) * s[pt] < dp[pt + 1][i & 1 ^ 1] + (s[j] - s[pt + 1]) * s[pt + 1] and pt + 1 < j)
      |                                                                  ~~^~~
sequence.cpp:43:28: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
   43 |    dp[j][i & 1] = dp[pt][i & 1 ^ 1] + s[pt] * (s[j] - s[pt]);
      |                          ~~^~~

Subtask #1
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 384 KB Unexpected end of file - int32 expected
2 Halted 0 ms 0 KB -

Subtask #2
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 384 KB Unexpected end of file - int32 expected
2 Halted 0 ms 0 KB -

Subtask #3
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 384 KB Unexpected end of file - int32 expected
2 Halted 0 ms 0 KB -

Subtask #4
0 / 17.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 384 KB Unexpected end of file - int32 expected
2 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 640 KB Unexpected end of file - int32 expected
2 Halted 0 ms 0 KB -

Subtask #6
0 / 29.0

# Verdict Execution time Memory Grader output
1 Incorrect 9 ms 2688 KB Unexpected end of file - int32 expected
2 Halted 0 ms 0 KB -