#include <bits/stdc++.h>
using namespace std;
int a, b, c, d;
struct water
{
int a, b, lvl;
};
set<pair<int, int>> visited;
void push(queue<water> &q, int v1, int v2, int t)
{
if(visited.count({v1, v2})) return;
visited.insert({v1, v2});
q.push({v1, v2, t});
if(v1 == c && v2 == d)
{
cout << t;
exit(0);
}
}
void bfs()
{
queue<water> q;
push(q, 0, 0, 0);
while(!q.empty())
{
int x=q.front().a, y=q.front().b, lvl=q.front().lvl;
//cout << x << ' ' << y << ' ' << lvl << '\n';
q.pop();
push(q, a, y, lvl + 1);
push(q, x, b, lvl + 1);
push(q, 0, y, lvl + 1);
push(q, x, 0, lvl + 1);
int k;
// 1 -> 2
if(x >= b - y) push(q, x - b + y, b, lvl + 1);
else push(q, 0, x + y, lvl + 1);
// 2 -> 1
if(y >= a - x) push(q, a, y - a + x, lvl + 1);
else push(q, x + y, 0, lvl + 1);
}
}
int main()
{
cin.tie(NULL); cout.tie(NULL);
ios_base::sync_with_stdio(false);
cin >>a >> b >> c >> d;
bfs();
cout << -1;
}
Compilation message
bucket.cpp: In function 'void bfs()':
bucket.cpp:36:13: warning: unused variable 'k' [-Wunused-variable]
36 | int k;
| ^
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
212 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| 3 |
Correct |
1 ms |
212 KB |
Output is correct |
| 4 |
Correct |
0 ms |
212 KB |
Output is correct |
| 5 |
Correct |
0 ms |
212 KB |
Output is correct |
| 6 |
Correct |
1 ms |
340 KB |
Output is correct |
| 7 |
Correct |
27 ms |
2132 KB |
Output is correct |
| 8 |
Correct |
1 ms |
212 KB |
Output is correct |
| 9 |
Correct |
0 ms |
324 KB |
Output is correct |
| 10 |
Correct |
1 ms |
212 KB |
Output is correct |
| 11 |
Correct |
0 ms |
212 KB |
Output is correct |
| 12 |
Correct |
1 ms |
224 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
212 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| 3 |
Correct |
1 ms |
212 KB |
Output is correct |
| 4 |
Correct |
0 ms |
212 KB |
Output is correct |
| 5 |
Correct |
0 ms |
212 KB |
Output is correct |
| 6 |
Correct |
1 ms |
340 KB |
Output is correct |
| 7 |
Correct |
27 ms |
2132 KB |
Output is correct |
| 8 |
Correct |
1 ms |
212 KB |
Output is correct |
| 9 |
Correct |
0 ms |
324 KB |
Output is correct |
| 10 |
Correct |
1 ms |
212 KB |
Output is correct |
| 11 |
Correct |
0 ms |
212 KB |
Output is correct |
| 12 |
Correct |
1 ms |
224 KB |
Output is correct |
| 13 |
Correct |
1 ms |
212 KB |
Output is correct |
| 14 |
Correct |
1 ms |
212 KB |
Output is correct |
| 15 |
Correct |
1 ms |
332 KB |
Output is correct |
| 16 |
Correct |
0 ms |
212 KB |
Output is correct |
| 17 |
Correct |
1 ms |
212 KB |
Output is correct |
| 18 |
Correct |
1 ms |
212 KB |
Output is correct |
| 19 |
Correct |
0 ms |
212 KB |
Output is correct |
| 20 |
Correct |
1 ms |
324 KB |
Output is correct |
| 21 |
Correct |
1 ms |
320 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
324 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| 3 |
Correct |
1 ms |
340 KB |
Output is correct |
| 4 |
Correct |
1 ms |
340 KB |
Output is correct |
| 5 |
Correct |
1 ms |
340 KB |
Output is correct |
| 6 |
Correct |
2 ms |
340 KB |
Output is correct |
| 7 |
Correct |
1 ms |
340 KB |
Output is correct |
| 8 |
Correct |
2 ms |
468 KB |
Output is correct |
| 9 |
Correct |
1 ms |
212 KB |
Output is correct |
| 10 |
Correct |
1 ms |
212 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
212 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| 3 |
Correct |
1 ms |
212 KB |
Output is correct |
| 4 |
Correct |
0 ms |
212 KB |
Output is correct |
| 5 |
Correct |
0 ms |
212 KB |
Output is correct |
| 6 |
Correct |
1 ms |
340 KB |
Output is correct |
| 7 |
Correct |
27 ms |
2132 KB |
Output is correct |
| 8 |
Correct |
1 ms |
212 KB |
Output is correct |
| 9 |
Correct |
0 ms |
324 KB |
Output is correct |
| 10 |
Correct |
1 ms |
212 KB |
Output is correct |
| 11 |
Correct |
0 ms |
212 KB |
Output is correct |
| 12 |
Correct |
1 ms |
212 KB |
Output is correct |
| 13 |
Correct |
1 ms |
212 KB |
Output is correct |
| 14 |
Correct |
1 ms |
332 KB |
Output is correct |
| 15 |
Correct |
0 ms |
212 KB |
Output is correct |
| 16 |
Correct |
1 ms |
212 KB |
Output is correct |
| 17 |
Correct |
1 ms |
212 KB |
Output is correct |
| 18 |
Correct |
0 ms |
212 KB |
Output is correct |
| 19 |
Correct |
1 ms |
324 KB |
Output is correct |
| 20 |
Correct |
1 ms |
320 KB |
Output is correct |
| 21 |
Correct |
1 ms |
324 KB |
Output is correct |
| 22 |
Correct |
1 ms |
212 KB |
Output is correct |
| 23 |
Correct |
1 ms |
340 KB |
Output is correct |
| 24 |
Correct |
1 ms |
340 KB |
Output is correct |
| 25 |
Correct |
1 ms |
340 KB |
Output is correct |
| 26 |
Correct |
2 ms |
340 KB |
Output is correct |
| 27 |
Correct |
1 ms |
340 KB |
Output is correct |
| 28 |
Correct |
2 ms |
468 KB |
Output is correct |
| 29 |
Correct |
1 ms |
212 KB |
Output is correct |
| 30 |
Correct |
1 ms |
212 KB |
Output is correct |
| 31 |
Correct |
1 ms |
224 KB |
Output is correct |
| 32 |
Correct |
2 ms |
468 KB |
Output is correct |
| 33 |
Correct |
5 ms |
596 KB |
Output is correct |
| 34 |
Correct |
175 ms |
9732 KB |
Output is correct |
| 35 |
Correct |
3 ms |
340 KB |
Output is correct |
| 36 |
Correct |
4 ms |
520 KB |
Output is correct |
| 37 |
Correct |
3 ms |
340 KB |
Output is correct |
| 38 |
Correct |
7 ms |
688 KB |
Output is correct |
| 39 |
Correct |
18 ms |
1232 KB |
Output is correct |
| 40 |
Correct |
6 ms |
704 KB |
Output is correct |
| 41 |
Correct |
6 ms |
740 KB |
Output is correct |
| 42 |
Correct |
18 ms |
1616 KB |
Output is correct |
| 43 |
Correct |
47 ms |
3388 KB |
Output is correct |
| 44 |
Correct |
22 ms |
1964 KB |
Output is correct |
| 45 |
Correct |
15 ms |
1420 KB |
Output is correct |
| 46 |
Correct |
467 ms |
18312 KB |
Output is correct |
