oj.uz

Submission #230195

# Submission time Handle Problem Language Result Execution time Memory
230195 2020-05-09T03:38:54 Z imnoob Xylophone (JOI18_xylophone) C++14
47 / 100
 86 ms 384 KB 
#include "xylophone.h"
#define MIN(i, j) (i < j ? i : j)
#define MAX(i, j) (i > j ? i : j) 
#include <bits/stdc++.h>

//static int A[5000];
bool visit[5005];
int ans[5005];
int N;

int tanya(int i, int j) {
	return query(MIN(i, j), MAX(i, j));
}

void got(int a, int i, int j) {
	int res1, res2;
	res1 = tanya(a, i);
	if(visit[ans[i] + res1] == 1 || ans[i] + res1 > N) {
		ans[a] = ans[i] - res1;
		return;
	} 
	if(visit[ans[i] - res1] == 1 || ans[i] - res1 < 1) {
		ans[a] = ans[i] + res1;
		return;
	}
	res2 = tanya(a, j);
	if(ans[i] > ans[j]) {
		if(ans[i] + res1 - ans[j] == res2) {
			ans[a] = ans[i] + res1;
		}else ans[a] = ans[i] - res1;
	}else {
		if(ans[j] - ans[i] + res1 == res2) {
			ans[a] = ans[i] - res1;
		}else ans[a] = ans[i] + res1;
	}
}

void solve(int n) {
	N = n;
	//binser
	int l = 1, r = N - 1, pos1, last1, last2 = 1;
	while(l <= r) {
		int mid = (l + r) >> 1;
		if(tanya(mid, N) == N - 1) {
			l = mid + 1;
			pos1 = mid;
		}else {
			r = mid - 1;
		}
	}
	ans[pos1] = 1;
	if(pos1 > 1) {
		ans[pos1 - 1] = tanya(pos1 - 1, pos1) + 1;
		visit[1] = 1, visit[ans[pos1 - 1]] = 1;
		for(int i = pos1 - 2; i > 0; i--) {
			got(i, i + 1, i + 2);
		}
	}
	ans[pos1 + 1] = tanya(pos1 + 1, pos1) + 1;
	visit[ans[pos1 + 1]] = 1;
	for(int i = pos1 + 2; i <= N; i++) {
		got(i, i - 1, i - 2);
	}
	for(int i = 1; i <= N; i++) {
		answer(i, ans[i]);
	}

}

Compilation message

xylophone.cpp: In function 'void solve(int)':
xylophone.cpp:41:30: warning: unused variable 'last1' [-Wunused-variable]
  int l = 1, r = N - 1, pos1, last1, last2 = 1;
                              ^~~~~
xylophone.cpp:41:37: warning: unused variable 'last2' [-Wunused-variable]
  int l = 1, r = N - 1, pos1, last1, last2 = 1;
                                     ^~~~~
xylophone.cpp:12:14: warning: assuming signed overflow does not occur when assuming that (X - c) > X is always false [-Wstrict-overflow]
  return query(MIN(i, j), MAX(i, j));
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~
xylophone.cpp:12:14: warning: assuming signed overflow does not occur when assuming that (X + c) < X is always false [-Wstrict-overflow]
  return query(MIN(i, j), MAX(i, j));
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~
xylophone.cpp:53:24: warning: 'pos1' may be used uninitialized in this function [-Wmaybe-uninitialized]
   ans[pos1 - 1] = tanya(pos1 - 1, pos1) + 1;
                   ~~~~~^~~~~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 6 ms 256 KB Output is correct
5 Correct 6 ms 256 KB Output is correct
6 Correct 6 ms 384 KB Output is correct
7 Correct 5 ms 376 KB Output is correct
8 Correct 6 ms 256 KB Output is correct
9 Correct 6 ms 256 KB Output is correct
10 Correct 6 ms 384 KB Output is correct
11 Correct 7 ms 384 KB Output is correct
12 Correct 6 ms 384 KB Output is correct
13 Correct 6 ms 384 KB Output is correct
14 Correct 6 ms 256 KB Output is correct
15 Correct 5 ms 256 KB Output is correct

Subtask #2
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 6 ms 256 KB Output is correct
5 Correct 6 ms 256 KB Output is correct
6 Correct 6 ms 384 KB Output is correct
7 Correct 5 ms 376 KB Output is correct
8 Correct 6 ms 256 KB Output is correct
9 Correct 6 ms 256 KB Output is correct
10 Correct 6 ms 384 KB Output is correct
11 Correct 7 ms 384 KB Output is correct
12 Correct 6 ms 384 KB Output is correct
13 Correct 6 ms 384 KB Output is correct
14 Correct 6 ms 256 KB Output is correct
15 Correct 5 ms 256 KB Output is correct
16 Correct 8 ms 384 KB Output is correct
17 Correct 14 ms 384 KB Output is correct
18 Correct 18 ms 384 KB Output is correct
19 Correct 23 ms 376 KB Output is correct
20 Correct 26 ms 384 KB Output is correct
21 Correct 20 ms 384 KB Output is correct
22 Correct 18 ms 384 KB Output is correct
23 Correct 24 ms 256 KB Output is correct
24 Correct 16 ms 384 KB Output is correct
25 Correct 16 ms 376 KB Output is correct
26 Correct 22 ms 384 KB Output is correct
27 Correct 26 ms 376 KB Output is correct
28 Correct 22 ms 384 KB Output is correct
29 Correct 22 ms 384 KB Output is correct
30 Correct 18 ms 384 KB Output is correct

Subtask #3
0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 6 ms 256 KB Output is correct
5 Correct 6 ms 256 KB Output is correct
6 Correct 6 ms 384 KB Output is correct
7 Correct 5 ms 376 KB Output is correct
8 Correct 6 ms 256 KB Output is correct
9 Correct 6 ms 256 KB Output is correct
10 Correct 6 ms 384 KB Output is correct
11 Correct 7 ms 384 KB Output is correct
12 Correct 6 ms 384 KB Output is correct
13 Correct 6 ms 384 KB Output is correct
14 Correct 6 ms 256 KB Output is correct
15 Correct 5 ms 256 KB Output is correct
16 Correct 8 ms 384 KB Output is correct
17 Correct 14 ms 384 KB Output is correct
18 Correct 18 ms 384 KB Output is correct
19 Correct 23 ms 376 KB Output is correct
20 Correct 26 ms 384 KB Output is correct
21 Correct 20 ms 384 KB Output is correct
22 Correct 18 ms 384 KB Output is correct
23 Correct 24 ms 256 KB Output is correct
24 Correct 16 ms 384 KB Output is correct
25 Correct 16 ms 376 KB Output is correct
26 Correct 22 ms 384 KB Output is correct
27 Correct 26 ms 376 KB Output is correct
28 Correct 22 ms 384 KB Output is correct
29 Correct 22 ms 384 KB Output is correct
30 Correct 18 ms 384 KB Output is correct
31 Correct 20 ms 380 KB Output is correct
32 Correct 49 ms 256 KB Output is correct
33 Correct 57 ms 384 KB Output is correct
34 Correct 66 ms 384 KB Output is correct
35 Correct 70 ms 384 KB Output is correct
36 Incorrect 86 ms 384 KB Wrong Answer [2]
37 Halted 0 ms 0 KB -