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Submission #258609

# Submission time Handle Problem Language Result Execution time Memory
258609 2020-08-06T08:41:14 Z 임성재(#5051) Swap (BOI16_swap) C++17
21 / 100
 1000 ms 512 KB 
#include<bits/stdc++.h>
using namespace std;

#define fast ios::sync_with_stdio(false); cin.tie(NULL)
#define fi first
#define se second
#define pb push_back
#define eb emplace_back
#define em emplace
#define all(v) (v).begin(), (v).end()
#define pre(a) cout<<fixed; cout.precision(a)
#define mp make_pair

typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
const int inf = 1e9;
const ll INF = 1e18;

int n;
int a[100010];
int ans[111];
bool chk[111];

int dfs(int x) {
	if(x > n) {
		bool flag = false;
		for(int i=1; i<=n; i++) {
			if(a[i] > ans[i]) flag = false;
			else if(a[i] < ans[i]) flag = true;
			else continue;

			break;
		}

		if(flag) {
			for(int i=1; i<=n; i++) {
				ans[i] = a[i];
			}
		}

		return 0;
	}

	if(x >= 22) {
		if(min({a[x/2], a[x/2*2], a[x/2 * 2 + 1]}) == a[x/2*2]) swap(a[x/2], a[x/2*2]), chk[x/2*2] = true;
		else if(min({a[x/2], a[x/2*2], a[x/2 * 2 + 1]}) == a[x/2*2+1]) {
			swap(a[x/2], a[x/2*2+1]), chk[x/2*2+1] = true;
			if(a[x/2*2] > a[x/2*2+1]) swap(a[x/2*2], a[x/2*2+1]), chk[x/2*2] = true; 
		}

		dfs(x+2);

		if(chk[x/2*2+1]) swap(a[x/2], a[x/2*2+1]);
		if(chk[x/2*2]) swap(a[x/2], a[x/2*2]);

		chk[x/2*2] = chk[x/2*2+1] = false;
	}
	else {
		dfs(x+1);
		swap(a[x/2], a[x]);
		dfs(x+1);
		swap(a[x/2], a[x]);
	}
}

int main() {
	fast;

	cin >> n;

	for(int i=1; i<=100; i++)
		a[i] = i;

	for(int i=1; i<=n; i++) {
		cin >> a[i];
		ans[i] = a[i];
	}

	dfs(2);

	for(int i=1; i<=n; i++) {
		cout << ans[i] << " ";
	}
}

Compilation message

swap.cpp: In function 'int dfs(int)':
swap.cpp:65:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^

Subtask #1
10.0 / 10.0

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

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 384 KB Output is correct
2 Correct 7 ms 384 KB Output is correct
3 Correct 6 ms 384 KB Output is correct
4 Correct 7 ms 384 KB Output is correct
5 Correct 6 ms 384 KB Output is correct
6 Correct 114 ms 384 KB Output is correct
7 Correct 146 ms 384 KB Output is correct
8 Correct 127 ms 424 KB Output is correct
9 Correct 126 ms 384 KB Output is correct
10 Correct 123 ms 512 KB Output is correct

Subtask #3
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 384 KB Output is correct
2 Correct 7 ms 384 KB Output is correct
3 Correct 6 ms 384 KB Output is correct
4 Correct 7 ms 384 KB Output is correct
5 Correct 6 ms 384 KB Output is correct
6 Correct 114 ms 384 KB Output is correct
7 Correct 146 ms 384 KB Output is correct
8 Correct 127 ms 424 KB Output is correct
9 Correct 126 ms 384 KB Output is correct
10 Correct 123 ms 512 KB Output is correct
11 Execution timed out 1026 ms 416 KB Time limit exceeded
12 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 384 KB Output is correct
2 Correct 7 ms 384 KB Output is correct
3 Correct 6 ms 384 KB Output is correct
4 Correct 7 ms 384 KB Output is correct
5 Correct 6 ms 384 KB Output is correct
6 Correct 114 ms 384 KB Output is correct
7 Correct 146 ms 384 KB Output is correct
8 Correct 127 ms 424 KB Output is correct
9 Correct 126 ms 384 KB Output is correct
10 Correct 123 ms 512 KB Output is correct
11 Execution timed out 1026 ms 416 KB Time limit exceeded
12 Halted 0 ms 0 KB -

Subtask #5
0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 384 KB Output is correct
2 Correct 7 ms 384 KB Output is correct
3 Correct 6 ms 384 KB Output is correct
4 Correct 7 ms 384 KB Output is correct
5 Correct 6 ms 384 KB Output is correct
6 Correct 114 ms 384 KB Output is correct
7 Correct 146 ms 384 KB Output is correct
8 Correct 127 ms 424 KB Output is correct
9 Correct 126 ms 384 KB Output is correct
10 Correct 123 ms 512 KB Output is correct
11 Execution timed out 1026 ms 416 KB Time limit exceeded
12 Halted 0 ms 0 KB -