oj.uz

Submission #1070529

# Submission time Handle Problem Language Result Execution time Memory
1070529 2024-08-22T15:00:40 Z _8_8_ Xylophone (JOI18_xylophone) C++17
100 / 100
 76 ms 98648 KB 
#include "xylophone.h"
#include <bits/stdc++.h>
using namespace std;
int p[5002],a[5002],mem[5002][5002];
int QQ(int l,int r) {
	if(mem[l][r] != -1) {
		return mem[l][r];
	}
	return mem[l][r] = query(l,r);
}
int n_;
bool bad(int x) {
	return (x < 1 || x > n_ || p[x]);
}
void make(int v,int val) {
	a[v] = val;
	p[val] = v;
}
void solve(int n) {
	n_ = n;
	memset(mem,-1,sizeof(mem));
	memset(p,0,sizeof(p));
	memset(a,0,sizeof(a));
	int nd = n - 1;
	int l = 1,r = n;
	while(r - l > 1) {
		int mid = (l + r) >> 1;
		if(QQ(1,mid) == nd) {
			r = mid;
		} else {
			l = mid;
		}
	}
	p[n] = r;
	l = 1,r = p[n];
	while(r - l > 1) {
		int mid = (l + r) >> 1;
		if(QQ(mid,p[n]) == nd) {
			l = mid;
		} else {
			r = mid;
		}
	}
	p[1] = l;
	a[p[1]] = 1;
	a[p[n]] = n;
	int mx = 1;
	if(p[1] - 1 >= 1) {
		make(p[1] - 1,1 + QQ(p[1] - 1,p[1]));
	}
	for(int i = p[1] - 2;i >= 1;i--) {
		int t2, t1, val;
		int t = QQ(i,i + 1);
		if(bad(a[i + 1] + t))  {
			val = a[i + 1] - t;
		} else if(bad(a[i + 1] - t)) {
			val = a[i + 1] + t;
		}
		else {
			t2 = QQ(i,i + 2);
			if(a[i + 2] > a[i + 1]) {
				if(t2 == a[i + 2] - (a[i + 1] - t)) {
					val = a[i + 1] - t;
				} else {
					val = a[i + 1] + t;
				}
			} else {
				if(t2 == a[i + 1] + t - a[i + 2]) {
					val = a[i + 1] + t;
				} else {
					val = a[i + 1] - t;
				}
			}
		}
		p[val] = i;
		a[i] = val;
	}
	mx = 1;
	if(p[1] + 1 < p[n]) {
		make(p[1] + 1,1 + QQ(p[1],p[1]+1));
	}
	for(int i = p[1] + 2;i < p[n];i++) {
		int val;
		int t2, t1;
		int t = QQ(i - 1,i);
		if(bad(a[i - 1] + t))  {
			val = a[i - 1] - t;
		} else if(bad(a[i - 1] - t)) {
			val = a[i - 1] + t;
		} else{
			t2 = QQ(i - 2,i);
			if(a[i - 2] > a[i - 1]) {
				if(t2 == a[i - 2] - (a[i - 1] - t)) {
					val = a[i - 1] - t;
				} else {
					val = a[i - 1] + t;
				}
			} else {
				if(t2 == a[i - 1] + t - a[i - 2]) {
					val = a[i - 1] + t;
				} else {
					val = a[i - 1] - t;
				}
			}
		}
		// cout << i << ' ' << val << '\n';
		p[val] = i;
		a[i] = val;
	}
	int mn = n;
	if(p[n] + 1 <= n) {
		make(p[n] + 1,n - QQ(p[n],p[n]+1));
	}
	for(int i = p[n] + 2;i <= n;i++) {
		int val;
		int t2, t1;
		int t = QQ(i - 1,i);
		if(bad(a[i - 1] + t))  {
			val = a[i - 1] - t;
		} else if(bad(a[i - 1] - t)) {
			val = a[i - 1] + t;
		} else{
			t2 = QQ(i - 2,i);
			if(a[i - 2] > a[i - 1]) {
				if(t2 == a[i - 2] - (a[i - 1] - t)) {
					val = a[i - 1] - t;
				} else {
					val = a[i - 1] + t;
				}
			} else {
				if(t2 == a[i - 1] + t - a[i - 2]) {
					val = a[i - 1] + t;
				} else {
					val = a[i - 1] - t;
				}
			}
		}
		p[val] = i;
		a[i] = val;
	}
	for(int i = 1;i <= n;i++) {
		answer(p[i],i);
	}
}

Compilation message

xylophone.cpp: In function 'void solve(int)':
xylophone.cpp:52:11: warning: unused variable 't1' [-Wunused-variable]
   52 |   int t2, t1, val;
      |           ^~
xylophone.cpp:84:11: warning: unused variable 't1' [-Wunused-variable]
   84 |   int t2, t1;
      |           ^~
xylophone.cpp:116:11: warning: unused variable 't1' [-Wunused-variable]
  116 |   int t2, t1;
      |           ^~
xylophone.cpp:47:6: warning: variable 'mx' set but not used [-Wunused-but-set-variable]
   47 |  int mx = 1;
      |      ^~
xylophone.cpp:110:6: warning: unused variable 'mn' [-Wunused-variable]
  110 |  int mn = n;
      |      ^~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 31 ms 98128 KB Output is correct
2 Correct 25 ms 98392 KB Output is correct
3 Correct 33 ms 98380 KB Output is correct
4 Correct 25 ms 98200 KB Output is correct
5 Correct 25 ms 98128 KB Output is correct
6 Correct 25 ms 98192 KB Output is correct
7 Correct 25 ms 98392 KB Output is correct
8 Correct 27 ms 98388 KB Output is correct
9 Correct 25 ms 98392 KB Output is correct
10 Correct 25 ms 98128 KB Output is correct
11 Correct 26 ms 98392 KB Output is correct
12 Correct 25 ms 98372 KB Output is correct
13 Correct 31 ms 98392 KB Output is correct
14 Correct 26 ms 98128 KB Output is correct
15 Correct 25 ms 98392 KB Output is correct

Subtask #2
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 31 ms 98128 KB Output is correct
2 Correct 25 ms 98392 KB Output is correct
3 Correct 33 ms 98380 KB Output is correct
4 Correct 25 ms 98200 KB Output is correct
5 Correct 25 ms 98128 KB Output is correct
6 Correct 25 ms 98192 KB Output is correct
7 Correct 25 ms 98392 KB Output is correct
8 Correct 27 ms 98388 KB Output is correct
9 Correct 25 ms 98392 KB Output is correct
10 Correct 25 ms 98128 KB Output is correct
11 Correct 26 ms 98392 KB Output is correct
12 Correct 25 ms 98372 KB Output is correct
13 Correct 31 ms 98392 KB Output is correct
14 Correct 26 ms 98128 KB Output is correct
15 Correct 25 ms 98392 KB Output is correct
16 Correct 27 ms 98392 KB Output is correct
17 Correct 30 ms 98152 KB Output is correct
18 Correct 30 ms 98372 KB Output is correct
19 Correct 30 ms 98640 KB Output is correct
20 Correct 35 ms 98376 KB Output is correct
21 Correct 36 ms 98244 KB Output is correct
22 Correct 34 ms 98392 KB Output is correct
23 Correct 29 ms 98324 KB Output is correct
24 Correct 32 ms 98392 KB Output is correct
25 Correct 34 ms 98648 KB Output is correct
26 Correct 33 ms 98376 KB Output is correct
27 Correct 30 ms 98392 KB Output is correct
28 Correct 30 ms 98408 KB Output is correct
29 Correct 33 ms 98640 KB Output is correct
30 Correct 32 ms 98392 KB Output is correct

Subtask #3
53.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 31 ms 98128 KB Output is correct
2 Correct 25 ms 98392 KB Output is correct
3 Correct 33 ms 98380 KB Output is correct
4 Correct 25 ms 98200 KB Output is correct
5 Correct 25 ms 98128 KB Output is correct
6 Correct 25 ms 98192 KB Output is correct
7 Correct 25 ms 98392 KB Output is correct
8 Correct 27 ms 98388 KB Output is correct
9 Correct 25 ms 98392 KB Output is correct
10 Correct 25 ms 98128 KB Output is correct
11 Correct 26 ms 98392 KB Output is correct
12 Correct 25 ms 98372 KB Output is correct
13 Correct 31 ms 98392 KB Output is correct
14 Correct 26 ms 98128 KB Output is correct
15 Correct 25 ms 98392 KB Output is correct
16 Correct 27 ms 98392 KB Output is correct
17 Correct 30 ms 98152 KB Output is correct
18 Correct 30 ms 98372 KB Output is correct
19 Correct 30 ms 98640 KB Output is correct
20 Correct 35 ms 98376 KB Output is correct
21 Correct 36 ms 98244 KB Output is correct
22 Correct 34 ms 98392 KB Output is correct
23 Correct 29 ms 98324 KB Output is correct
24 Correct 32 ms 98392 KB Output is correct
25 Correct 34 ms 98648 KB Output is correct
26 Correct 33 ms 98376 KB Output is correct
27 Correct 30 ms 98392 KB Output is correct
28 Correct 30 ms 98408 KB Output is correct
29 Correct 33 ms 98640 KB Output is correct
30 Correct 32 ms 98392 KB Output is correct
31 Correct 47 ms 98392 KB Output is correct
32 Correct 46 ms 98384 KB Output is correct
33 Correct 54 ms 98380 KB Output is correct
34 Correct 51 ms 98388 KB Output is correct
35 Correct 76 ms 98380 KB Output is correct
36 Correct 54 ms 98188 KB Output is correct
37 Correct 60 ms 98384 KB Output is correct
38 Correct 65 ms 98376 KB Output is correct
39 Correct 66 ms 98392 KB Output is correct
40 Correct 64 ms 98384 KB Output is correct
41 Correct 63 ms 98380 KB Output is correct
42 Correct 50 ms 98380 KB Output is correct
43 Correct 67 ms 98392 KB Output is correct
44 Correct 56 ms 98128 KB Output is correct
45 Correct 62 ms 98380 KB Output is correct
46 Correct 51 ms 98380 KB Output is correct
47 Correct 62 ms 98212 KB Output is correct
48 Correct 70 ms 98376 KB Output is correct
49 Correct 63 ms 98384 KB Output is correct
50 Correct 61 ms 98380 KB Output is correct
51 Correct 57 ms 98392 KB Output is correct
52 Correct 63 ms 98384 KB Output is correct
53 Correct 60 ms 98392 KB Output is correct
54 Correct 60 ms 98392 KB Output is correct
55 Correct 60 ms 98484 KB Output is correct
56 Correct 68 ms 98184 KB Output is correct
57 Correct 62 ms 98384 KB Output is correct
58 Correct 64 ms 98380 KB Output is correct
59 Correct 58 ms 98380 KB Output is correct
60 Correct 64 ms 98392 KB Output is correct