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Submission #117154

# Submission time Handle Problem Language Result Execution time Memory
117154 2019-06-15T03:54:18 Z Just_Solve_The_Problem Swap (BOI16_swap) C++11
100 / 100
 202 ms 16168 KB 
#include <bits/stdc++.h>

#define ll long long
#define ok puts("ok");

using namespace std;

const int N = (int)2e5 + 7;

int n;
int a[N];
map <pair<int, int>, int> mp;

int get(int ind, int y) {
	if (mp.count({ind, y})) return mp[{ind, y}];
	if (ind * 2 > n) return ind;
	if (ind * 2 + 1 > n) {
		if (y > a[ind * 2]) {
			return ind * 2;
		}
		return ind;
	}
	if (y < min(a[ind * 2], a[ind * 2 + 1])) {
		return ind;
	} else if (a[ind * 2] < min(y, a[ind * 2 + 1])) {
		return mp[{ind, y}] = get(ind * 2, y);
	} else {
		int mn = min(y, a[ind * 2]);
		int mx = max(y, a[ind * 2]);
		if (get(ind * 2, mn) < get(ind * 2 + 1, mn)) {
			if (y == mn) return mp[{ind, y}] = get(ind * 2, y);
			return mp[{ind, y}] = get(ind * 2 + 1, y);
		} else {
			if (y == mn) return mp[{ind, y}] = get(ind * 2 + 1, y);
			return mp[{ind, y}] = get(ind * 2, y);
		}
	}
}

void solve(int ind) {
	if (ind * 2 > n) return ;
	if (ind * 2 + 1 > n) {
		if (a[ind] > a[ind * 2]) {
			swap(a[ind], a[ind * 2]);
		}
		return ;
	}
	if (a[ind] < min(a[ind * 2], a[ind * 2 + 1])) {
		
	} else if (a[ind * 2] < min(a[ind], a[ind * 2 + 1])) {
		swap(a[ind * 2], a[ind]);
	} else {
		int mn = min(a[ind], a[ind * 2]);
		int mx = max(a[ind], a[ind * 2]);
		a[ind] = a[ind * 2 + 1];
		if (get(ind * 2, mn) < get(ind * 2 + 1, mn)) {
			a[ind * 2] = mn;
			a[ind * 2 + 1] = mx;
		} else {
			a[ind * 2] = mx;
			a[ind * 2 + 1] = mn;
		}
	}
	solve(ind + 1);
}

main() {
	scanf("%d", &n);
	for (int i = 1; i <= n; i++) {
		scanf("%d", &a[i]);
	}
	solve(1);
	for (int i = 1; i <= n; i++) {
		printf("%d ", a[i]);
	}
}

Compilation message

swap.cpp: In function 'int get(int, int)':
swap.cpp:29:7: warning: unused variable 'mx' [-Wunused-variable]
   int mx = max(y, a[ind * 2]);
       ^~
swap.cpp: At global scope:
swap.cpp:67:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main() {
      ^
swap.cpp: In function 'int main()':
swap.cpp:68:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
  ~~~~~^~~~~~~~~~
swap.cpp:70:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &a[i]);
   ~~~~~^~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 3 ms 384 KB Output is correct
5 Correct 2 ms 356 KB Output is correct

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 3 ms 384 KB Output is correct
5 Correct 2 ms 356 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 2 ms 256 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 2 ms 256 KB Output is correct

Subtask #3
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 3 ms 384 KB Output is correct
5 Correct 2 ms 356 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 2 ms 256 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 2 ms 256 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 3 ms 384 KB Output is correct
14 Correct 2 ms 384 KB Output is correct
15 Correct 3 ms 384 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 3 ms 384 KB Output is correct
5 Correct 2 ms 356 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 2 ms 256 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 2 ms 256 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 3 ms 384 KB Output is correct
14 Correct 2 ms 384 KB Output is correct
15 Correct 3 ms 384 KB Output is correct
16 Correct 18 ms 2048 KB Output is correct
17 Correct 18 ms 2048 KB Output is correct
18 Correct 18 ms 2020 KB Output is correct
19 Correct 42 ms 4208 KB Output is correct
20 Correct 74 ms 4244 KB Output is correct

Subtask #5
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 3 ms 384 KB Output is correct
5 Correct 2 ms 356 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 2 ms 256 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 2 ms 256 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 3 ms 384 KB Output is correct
14 Correct 2 ms 384 KB Output is correct
15 Correct 3 ms 384 KB Output is correct
16 Correct 18 ms 2048 KB Output is correct
17 Correct 18 ms 2048 KB Output is correct
18 Correct 18 ms 2020 KB Output is correct
19 Correct 42 ms 4208 KB Output is correct
20 Correct 74 ms 4244 KB Output is correct
21 Correct 73 ms 7416 KB Output is correct
22 Correct 73 ms 7368 KB Output is correct
23 Correct 72 ms 7492 KB Output is correct
24 Correct 202 ms 16072 KB Output is correct
25 Correct 198 ms 16168 KB Output is correct