Submission #2706022


Source Code Expand

#include <bits/stdc++.h>
using namespace std;
struct N {
	int v, l, x, y, r;
};
bool operator<(const N &a, const N &b) {
	return a.v > b.v;
}
priority_queue<N> q;
int n, a[200020];
pair<int, int> f[400020][17];
pair<int, int> Q(int x, int y) {
	int l = 31 - __builtin_clz(y - x);
	return min(f[x][l], f[y - (1 << l)][l]);
}
void push(int l, int r) {
	if (l == r) {
		return;
	}
	pair<int, int> x = Q(l, r);
	pair<int, int> y = Q(x.second + 1, r + 1);
	q.push({x.first, l, x.second, y.second, r});
}
int main() {
	scanf("%d", &n);
	for (int i = 0; i < n; i++) {
		scanf("%d", &a[i]);
		f[i][1] = make_pair(a[i], i);
	}
	for (int j = 1; j < 16; j++) {
		for (int i = 0; i < n; i++) {
			f[i][j + 1] = min(f[i][j], f[i + (1 << j)][j]);
		}
	}
	push(0, n);
	for (int i = 0; i < n; i += 2) {
		N u = q.top();
		q.pop();
		printf("%d %d ", a[u.x], a[u.y]);
		push(u.l, u.x);
		push(u.x + 1, u.y);
		push(u.y + 1, u.r);
	}
	return 0;
}

Submission Info

Submission Time
Task E - Young Maids
User Factorio
Language C++14 (GCC 5.4.1)
Score 0
Code Size 974 Byte
Status RE
Exec Time 152 ms
Memory 29568 KB

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:25:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
                 ^
./Main.cpp:27:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &a[i]);
                     ^

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 0 / 800
Status
AC × 3
AC × 5
RE × 18
Set Name Test Cases
Sample 0_00.txt, 0_01.txt, 0_02.txt
All 0_00.txt, 0_01.txt, 0_02.txt, 1_00.txt, 1_01.txt, 1_02.txt, 1_03.txt, 1_04.txt, 1_05.txt, 1_06.txt, 1_07.txt, 1_08.txt, 1_09.txt, 1_10.txt, 1_11.txt, 1_12.txt, 1_13.txt, 1_14.txt, 1_15.txt, 1_16.txt, 1_17.txt, 1_18.txt, 1_19.txt
Case Name Status Exec Time Memory
0_00.txt AC 2 ms 2304 KB
0_01.txt AC 1 ms 2304 KB
0_02.txt AC 1 ms 2304 KB
1_00.txt AC 1 ms 2304 KB
1_01.txt AC 1 ms 2304 KB
1_02.txt RE 144 ms 29568 KB
1_03.txt RE 143 ms 29568 KB
1_04.txt RE 142 ms 29568 KB
1_05.txt RE 151 ms 29568 KB
1_06.txt RE 152 ms 29568 KB
1_07.txt RE 147 ms 29568 KB
1_08.txt RE 148 ms 29568 KB
1_09.txt RE 148 ms 29568 KB
1_10.txt RE 151 ms 29568 KB
1_11.txt RE 144 ms 29568 KB
1_12.txt RE 146 ms 29568 KB
1_13.txt RE 149 ms 29568 KB
1_14.txt RE 151 ms 29568 KB
1_15.txt RE 150 ms 29568 KB
1_16.txt RE 150 ms 29568 KB
1_17.txt RE 151 ms 29568 KB
1_18.txt RE 149 ms 29568 KB
1_19.txt RE 149 ms 29568 KB