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Submission #130921

# Submission time Handle Problem Language Result Execution time Memory
130921 2019-07-16T09:01:43 Z sebinkim Snake (CEOI08_snake) C++14
55 / 100
 2 ms 376 KB 
#include <bits/stdc++.h>

#include "snakelib.h"

using namespace std;

int main()
{
	int i, k, d, s1, s2, e1, e2, m1, m2;
	char a1, a2;
	
	k = get_speed();
	
	s1 = 0; e1 = 12121;
	s2 = 0; e2 = 12121;
	
	for(i=0; i<13; i++){
		e1 = min(12121, e1 + k);
		e2 = min(12121, e2 + k);
		
		if(s1 == s2 && e1 == e2 && e1 - s1 >= 3){
			m1 = (s1 * 2 + e1) / 3;
			m2 = (s1 + e1 * 2) / 3;
			
			ask_snake(m1, m2, &a1, &a2);
			
			if(a1 == 'b' && a2 == 'f'){
				s1 = s2 = m1 + 1;
				e1 = e2 = m2 - 1;
			}
			else if(a1 == 'f') e1 = e2 = m1 - 1;
			else if(a2 == 'b') s1 = s2 = m2 + 1;
			else{
				if(a1 == 's') e1 = m1;
				else s1 = m1 + 1, e1 = m2;
				if(a2 == 's') s2 = m2;
				else s2 = m1, e2 = m2 - 1;
			}
		}
		else{
			m1 = (s1 + e1) / 2;
			m2 = (s2 + e2) / 2;
			
			ask_snake(m1, m2, &a1, &a2);
			
			if(a1 == 'b') s1 = m1 + 1;
			else e1 = m1 - 1;
			
			if(a2 == 'f') e2 = m2 - 1;
			else s2 = m2 + 1;
		}
	}
	
	tell_length(s2 - e1 - 1);
}

Compilation message

snake.cpp: In function 'int main()':
snake.cpp:9:12: warning: unused variable 'd' [-Wunused-variable]
  int i, k, d, s1, s2, e1, e2, m1, m2;
            ^

Subtask #1
55.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct: estimate ok. 13 calls needed
2 Correct 2 ms 248 KB Output is correct: estimate ok. 13 calls needed
3 Correct 2 ms 248 KB Output is correct: estimate ok. 13 calls needed
4 Correct 2 ms 252 KB Output is correct: estimate ok. 13 calls needed
5 Incorrect 2 ms 248 KB your estimate differs too much (14 units)
6 Correct 2 ms 252 KB Output is correct: estimate ok. 13 calls needed
7 Incorrect 2 ms 292 KB your estimate differs too much (2 units)
8 Incorrect 2 ms 248 KB your estimate differs too much (3 units)
9 Incorrect 2 ms 376 KB your estimate differs too much (4 units)
10 Incorrect 2 ms 248 KB your estimate differs too much (5 units)
11 Incorrect 2 ms 248 KB your estimate differs too much (6 units)
12 Correct 2 ms 248 KB Output is correct: estimate ok. 13 calls needed
13 Incorrect 2 ms 252 KB your estimate differs too much (7 units)
14 Correct 2 ms 296 KB Output is correct: estimate ok. 13 calls needed
15 Correct 2 ms 376 KB Output is correct: estimate ok. 13 calls needed
16 Correct 2 ms 376 KB Output is correct: estimate ok. 13 calls needed
17 Incorrect 2 ms 248 KB your estimate differs too much (2 units)
18 Correct 2 ms 248 KB Output is correct: estimate ok. 13 calls needed
19 Correct 2 ms 248 KB Output is correct: estimate ok. 13 calls needed
20 Incorrect 2 ms 296 KB your estimate differs too much (7 units)