oj.uz

Submission #115047

# Submission time Handle Problem Language Result Execution time Memory
115047 2019-06-04T19:35:46 Z luciocf Tug of War (BOI15_tug) C++14
41 / 100
 117 ms 920 KB 
#include <bits/stdc++.h>

using namespace std;

const int maxn = 1e5+10;

int l[maxn], r[maxn], s[maxn], grau[maxn];

bool mark[maxn];

int main(void)
{
	int n, k;
	scanf("%d %d", &n, &k);

	for (int i = 1; i <= 2*n; i++)
	{
		scanf("%d %d %d", &l[i], &r[i], &s[i]);
		r[i] += n;

		grau[l[i]]++, grau[r[i]]++;
	}

	if (n > 10)
	{
		bool ok = 1;
		for (int i = 1; i <= 2*n; i++)
			if (!grau[i])
				ok = 0;

		if (ok) printf("YES\n");
		else printf("NO\n");

		return 0;
	}

	bool ans = 0;

	for (int mask = 0; mask < (1<<(2*n)); mask++)
	{
		bool ok = 1;

		for (int i = 1; i <= 2*n; i++)
			mark[i] = 0;

		for (int i = 0; i < 2*n; i++)
		{
			if (mask&(1<<i))
			{
				if (mark[r[i+1]]) ok = 0;
				else mark[r[i+1]] = 1;
			}
			else
			{
				if (mark[l[i+1]]) ok = 0;
				else mark[l[i+1]] = 1;
			}
		}

		if (!ok) continue;

		int sa = 0, sb = 0;

		for (int i = 0; i < 2*n; i++)
		{
			if (mask&(1<<i))
				sb += s[i+1];
			else
				sa += s[i+1];
		}

		if (abs(sa-sb) <= k)
		{
			ans = 1;
			break;
		}
	}

	if (ans == 1) printf("YES\n");
	else printf("NO\n");
}

Compilation message

tug.cpp: In function 'int main()':
tug.cpp:14:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d", &n, &k);
  ~~~~~^~~~~~~~~~~~~~~~~
tug.cpp:18:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d %d", &l[i], &r[i], &s[i]);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 117 ms 384 KB Output is correct
2 Correct 7 ms 384 KB Output is correct
3 Correct 101 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 117 ms 504 KB Output is correct
6 Correct 97 ms 384 KB Output is correct
7 Correct 4 ms 384 KB Output is correct
8 Correct 33 ms 384 KB Output is correct
9 Correct 7 ms 512 KB Output is correct
10 Correct 105 ms 476 KB Output is correct
11 Correct 6 ms 384 KB Output is correct
12 Correct 3 ms 384 KB Output is correct
13 Correct 14 ms 384 KB Output is correct
14 Correct 7 ms 384 KB Output is correct
15 Correct 3 ms 384 KB Output is correct
16 Correct 113 ms 384 KB Output is correct
17 Correct 14 ms 384 KB Output is correct
18 Correct 6 ms 384 KB Output is correct
19 Correct 4 ms 384 KB Output is correct
20 Correct 19 ms 512 KB Output is correct
21 Correct 103 ms 416 KB Output is correct
22 Correct 93 ms 504 KB Output is correct
23 Correct 100 ms 384 KB Output is correct
24 Correct 6 ms 384 KB Output is correct
25 Correct 106 ms 384 KB Output is correct

Subtask #2
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 117 ms 384 KB Output is correct
2 Correct 7 ms 384 KB Output is correct
3 Correct 101 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 117 ms 504 KB Output is correct
6 Correct 97 ms 384 KB Output is correct
7 Correct 4 ms 384 KB Output is correct
8 Correct 33 ms 384 KB Output is correct
9 Correct 7 ms 512 KB Output is correct
10 Correct 105 ms 476 KB Output is correct
11 Correct 6 ms 384 KB Output is correct
12 Correct 3 ms 384 KB Output is correct
13 Correct 14 ms 384 KB Output is correct
14 Correct 7 ms 384 KB Output is correct
15 Correct 3 ms 384 KB Output is correct
16 Correct 113 ms 384 KB Output is correct
17 Correct 14 ms 384 KB Output is correct
18 Correct 6 ms 384 KB Output is correct
19 Correct 4 ms 384 KB Output is correct
20 Correct 19 ms 512 KB Output is correct
21 Correct 103 ms 416 KB Output is correct
22 Correct 93 ms 504 KB Output is correct
23 Correct 100 ms 384 KB Output is correct
24 Correct 6 ms 384 KB Output is correct
25 Correct 106 ms 384 KB Output is correct
26 Correct 3 ms 384 KB Output is correct
27 Incorrect 3 ms 384 KB Output isn't correct
28 Halted 0 ms 0 KB -

Subtask #3
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 896 KB Output is correct
2 Correct 8 ms 896 KB Output is correct
3 Correct 8 ms 768 KB Output is correct
4 Correct 8 ms 896 KB Output is correct
5 Correct 8 ms 896 KB Output is correct
6 Correct 8 ms 896 KB Output is correct
7 Correct 7 ms 896 KB Output is correct
8 Correct 8 ms 896 KB Output is correct
9 Correct 8 ms 896 KB Output is correct
10 Correct 8 ms 896 KB Output is correct
11 Correct 8 ms 896 KB Output is correct
12 Correct 8 ms 920 KB Output is correct
13 Correct 8 ms 896 KB Output is correct
14 Correct 8 ms 896 KB Output is correct
15 Correct 8 ms 896 KB Output is correct
16 Correct 8 ms 896 KB Output is correct
17 Correct 8 ms 896 KB Output is correct
18 Correct 7 ms 896 KB Output is correct
19 Correct 8 ms 896 KB Output is correct
20 Correct 8 ms 896 KB Output is correct
21 Correct 8 ms 896 KB Output is correct
22 Correct 8 ms 896 KB Output is correct

Subtask #4
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 117 ms 384 KB Output is correct
2 Correct 7 ms 384 KB Output is correct
3 Correct 101 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 117 ms 504 KB Output is correct
6 Correct 97 ms 384 KB Output is correct
7 Correct 4 ms 384 KB Output is correct
8 Correct 33 ms 384 KB Output is correct
9 Correct 7 ms 512 KB Output is correct
10 Correct 105 ms 476 KB Output is correct
11 Correct 6 ms 384 KB Output is correct
12 Correct 3 ms 384 KB Output is correct
13 Correct 14 ms 384 KB Output is correct
14 Correct 7 ms 384 KB Output is correct
15 Correct 3 ms 384 KB Output is correct
16 Correct 113 ms 384 KB Output is correct
17 Correct 14 ms 384 KB Output is correct
18 Correct 6 ms 384 KB Output is correct
19 Correct 4 ms 384 KB Output is correct
20 Correct 19 ms 512 KB Output is correct
21 Correct 103 ms 416 KB Output is correct
22 Correct 93 ms 504 KB Output is correct
23 Correct 100 ms 384 KB Output is correct
24 Correct 6 ms 384 KB Output is correct
25 Correct 106 ms 384 KB Output is correct
26 Correct 3 ms 384 KB Output is correct
27 Incorrect 3 ms 384 KB Output isn't correct
28 Halted 0 ms 0 KB -