oj.uz

Submission #88886

# Submission time Handle Problem Language Result Execution time Memory
88886 2018-12-09T18:18:45 Z zviki Triumphal arch (POI13_luk) C++14
0 / 100
 287 ms 18768 KB 
#include <stdio.h> 
#include <string.h>
#include <stdlib.h>
#include <vector>

#define 	avg(a, b) 	((a + b) / 2)
#define 	ARR_SIZE 	300050

using namespace std;

vector<vector<int>> map_of_cities(ARR_SIZE);
int visited_set[ARR_SIZE];

int 
num_not_satisfy(int num_workers, int city)
{	
	int i, child_city, children = map_of_cities[city].size(), rec_res, num_children = 0;
	visited_set[city] = true;
	for (i = 0, rec_res = 0; i < children; i++) {
		child_city = map_of_cities[city][i];
		if (visited_set[child_city] ==  false) {
			num_children++;
			rec_res += num_not_satisfy(num_workers, child_city);
		}	
	}
	if ((num_children + rec_res - num_workers) <= 0) {
		return 0;
	} else {
		return children + rec_res - num_workers;
	}
}

int 
main() 
{
	int n, i, res, bsearch_start, bsearch_end, bsearch_mid, road_from, road_to; 	
	scanf("%d", & n);

	for (i = 1; i < n; i++) {
		scanf("%d %d", &road_from, & road_to);
		map_of_cities[road_from].push_back(road_to);
		map_of_cities[road_to].push_back(road_from);
	}

	for (bsearch_start = 0, bsearch_end = n; bsearch_start < bsearch_end; ) {
		bsearch_mid = avg(bsearch_start, bsearch_end);
		memset(visited_set, false, ARR_SIZE * sizeof(bool));
		res = num_not_satisfy(bsearch_mid, 1);
		if (res != 0) {
			bsearch_start = bsearch_mid + 1;
		} else {
			bsearch_end = bsearch_mid;
		}
	}

	res = bsearch_start;
	printf("%d\n", res);
	return 0;
}

Compilation message

luk.cpp: In function 'int main()':
luk.cpp:37:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", & n);
  ~~~~~^~~~~~~~~~~
luk.cpp:40:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d", &road_from, & road_to);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 9 ms 7672 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 9 ms 7676 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 12 ms 7752 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 9 ms 7752 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 8152 KB Output is correct
2 Correct 18 ms 8408 KB Output is correct
3 Incorrect 13 ms 8408 KB Output isn't correct

Subtask #6
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 46 ms 8964 KB Output is correct
2 Incorrect 44 ms 10100 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #7
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 71 ms 11256 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #8
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 169 ms 14996 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 281 ms 18768 KB Output isn't correct

Subtask #10
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 287 ms 18768 KB Output isn't correct
2 Halted 0 ms 0 KB -