oj.uz

Submission #105799

# Submission time Handle Problem Language Result Execution time Memory
105799 2019-04-15T00:50:27 Z gs18103 None (KOI16_dist) C++
42 / 100
 95 ms 636 KB 
#include <bits/stdc++.h>

using namespace std;

long long arr[1010][4];
long long ans;
int n, T;
long long dp[10101010];

long long cal_dis(int t)
{
	if(dp[t] != 0) return dp[t];
	long long dis = 0;
	for(int i = 0; i < n; i++)
	{
		for(int j = 0; j < i; j++)
		{
			dis = max(dis, (arr[i][0]-arr[j][0]+t*(arr[i][2]-arr[j][2]))*(arr[i][0]-arr[j][0]+t*(arr[i][2]-arr[j][2]))+
						   (arr[i][1]-arr[j][1]+t*(arr[i][3]-arr[j][3]))*(arr[i][1]-arr[j][1]+t*(arr[i][3]-arr[j][3])));
		}
	}
	return dp[t] = dis;
}

int search(int s, int e)
{
	if(s + 5 >= e)
	{
		long long dis = 10000000000000000LL;
		for(int i = s; i <= e; i++)
			dis = min(dis, cal_dis(i));
		for(int i = s; i <= e; i++)
			if(dis == cal_dis(i)) return i;
	}
	int t1 = (2 * s + e) / 3, t2 = (s + 2 * e) / 3;
	long long dis1 = cal_dis(t1), dis2 = cal_dis(t2);
	if(dis1 <= dis2) return search(s, t2);
	else return search(t1, e);
}

int main()
{
	scanf("%d %d", &n, &T);
	for(int i = 0; i < n; i++)
		for(int j = 0; j < 4; j++)
			scanf("%lld", &arr[i][j]);
	int ans = search(0, T);
	printf("%d\n%lld", ans, cal_dis(ans));
}

Compilation message

dist.cpp: In function 'int main()':
dist.cpp:43:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d", &n, &T);
  ~~~~~^~~~~~~~~~~~~~~~~
dist.cpp:46:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    scanf("%lld", &arr[i][j]);
    ~~~~~^~~~~~~~~~~~~~~~~~~~

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 512 KB Output is correct
2 Correct 3 ms 512 KB Output is correct
3 Correct 3 ms 512 KB Output is correct
4 Correct 2 ms 512 KB Output is correct
5 Correct 2 ms 512 KB Output is correct
6 Correct 3 ms 512 KB Output is correct
7 Correct 3 ms 512 KB Output is correct
8 Correct 3 ms 512 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 3 ms 512 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 512 KB Output is correct
2 Correct 3 ms 512 KB Output is correct
3 Correct 3 ms 512 KB Output is correct
4 Correct 2 ms 512 KB Output is correct
5 Correct 2 ms 512 KB Output is correct
6 Correct 3 ms 512 KB Output is correct
7 Correct 3 ms 512 KB Output is correct
8 Correct 3 ms 512 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 3 ms 512 KB Output is correct
11 Correct 78 ms 548 KB Output is correct
12 Correct 72 ms 632 KB Output is correct
13 Correct 75 ms 632 KB Output is correct
14 Correct 71 ms 632 KB Output is correct
15 Correct 79 ms 604 KB Output is correct
16 Correct 82 ms 632 KB Output is correct
17 Correct 79 ms 548 KB Output is correct
18 Correct 92 ms 636 KB Output is correct
19 Correct 56 ms 512 KB Output is correct
20 Correct 95 ms 620 KB Output is correct

Subtask #3
0 / 39.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4 ms 384 KB Time limit exceeded (wall clock)
2 Halted 0 ms 0 KB -

Subtask #4
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 512 KB Output is correct
2 Correct 3 ms 512 KB Output is correct
3 Correct 3 ms 512 KB Output is correct
4 Correct 2 ms 512 KB Output is correct
5 Correct 2 ms 512 KB Output is correct
6 Correct 3 ms 512 KB Output is correct
7 Correct 3 ms 512 KB Output is correct
8 Correct 3 ms 512 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 3 ms 512 KB Output is correct
11 Correct 78 ms 548 KB Output is correct
12 Correct 72 ms 632 KB Output is correct
13 Correct 75 ms 632 KB Output is correct
14 Correct 71 ms 632 KB Output is correct
15 Correct 79 ms 604 KB Output is correct
16 Correct 82 ms 632 KB Output is correct
17 Correct 79 ms 548 KB Output is correct
18 Correct 92 ms 636 KB Output is correct
19 Correct 56 ms 512 KB Output is correct
20 Correct 95 ms 620 KB Output is correct
21 Execution timed out 4 ms 384 KB Time limit exceeded (wall clock)
22 Halted 0 ms 0 KB -