QOJ.ac
QOJ
| ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
|---|---|---|---|---|---|---|---|---|---|
| #677766 | #7781. Sheep Eat Wolves | yumingsk# | WA | 0ms | 3708kb | C++20 | 2.0kb | 2024-10-26 13:22:52 | 2024-10-26 13:22:55 |
Judging History
answer
#pragma GCC optimize(3, "Ofast", "inline")
#include <iostream>
#include <bits/stdc++.h>
#define IOS ios::sync_with_stdio(false), cin.tie(0), cout.tie(0)
#define INF 0x3f3f3f3f
#define L_INF 0x7f3f3f3f3f3f3f3f
#define db cout << "debug\n";
using namespace std;
const int Mod = 998244353;
using ll = long long;
ll x, y, p, q, sum, xl, yl, xr, yr, kx, ky, k;
void solve()
{
cin >> x >> y >> p >> q;
sum = 0;
xl = x;
yl = y;
xr = yr = 0;
while (xl > 0)
{
if (xl <= p)
{
cout << sum + 1 << '\n';
return;
}
kx = p;
while (kx > 0)
{
ky = p - kx;
while (ky > 0 && yr + ky - xr - kx - q - p > 0)
ky--;
if (yl - ky - xl + kx - q <= 0)
break;
kx--;
}
if (kx == 0)
ky = p;
while (ky > 0 && yr + ky - xr - kx - q - p > 0)
ky--;
// cout << kx << ' ' << ky << '\n';
xl -= kx;
yl -= ky;
xr += kx;
yr += ky;
// cout << xl << ' ' << yl << '\n';
// cout << xl << ' ' << yl << ' ' << xr << ' ' << yr << '\n';
if (yl - xl - q > 0 && xl > 0)
{
cout << "-1\n";
return;
}
if (yr - xr - q > 0 && xr > 0)
{
k = yr - xr - q;
if (k > p)
{
cout << "-1\n";
return;
}
yr -= k;
yl += k;
}
// cout << xl << ' ' << yl << ' ' << xr << ' ' << yr << '\n';
sum += 2;
}
}
int main()
{
IOS;
// freopen("in.txt", "r", stdin);
// freopen("out.txt", "w", stdout);
#ifndef ONLINE_JUDGE
clock_t start_time = clock();
#endif
int t = 1;
// cin>>t;
while (t--)
{
solve();
}
#ifndef ONLINE_JUDGE
cout << "Used " << (double)(clock() - start_time) << " ms" << endl;
#endif
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 0ms
memory: 3552kb
input:
4 4 3 1
output:
3
result:
ok 1 number(s): "3"
Test #2:
score: 0
Accepted
time: 0ms
memory: 3540kb
input:
3 5 2 0
output:
5
result:
ok 1 number(s): "5"
Test #3:
score: 0
Accepted
time: 0ms
memory: 3608kb
input:
2 5 1 1
output:
-1
result:
ok 1 number(s): "-1"
Test #4:
score: 0
Accepted
time: 0ms
memory: 3608kb
input:
1 1 1 0
output:
1
result:
ok 1 number(s): "1"
Test #5:
score: 0
Accepted
time: 0ms
memory: 3612kb
input:
3 3 1 1
output:
7
result:
ok 1 number(s): "7"
Test #6:
score: 0
Accepted
time: 0ms
memory: 3604kb
input:
3 3 2 1
output:
3
result:
ok 1 number(s): "3"
Test #7:
score: 0
Accepted
time: 0ms
memory: 3708kb
input:
10 9 1 10
output:
19
result:
ok 1 number(s): "19"
Test #8:
score: 0
Accepted
time: 0ms
memory: 3540kb
input:
15 20 2 5
output:
27
result:
ok 1 number(s): "27"
Test #9:
score: 0
Accepted
time: 0ms
memory: 3612kb
input:
18 40 16 7
output:
5
result:
ok 1 number(s): "5"
Test #10:
score: 0
Accepted
time: 0ms
memory: 3600kb
input:
60 60 8 1
output:
27
result:
ok 1 number(s): "27"
Test #11:
score: 0
Accepted
time: 0ms
memory: 3700kb
input:
60 60 8 4
output:
27
result:
ok 1 number(s): "27"
Test #12:
score: 0
Accepted
time: 0ms
memory: 3600kb
input:
60 60 8 8
output:
25
result:
ok 1 number(s): "25"
Test #13:
score: 0
Accepted
time: 0ms
memory: 3696kb
input:
60 60 16 1
output:
13
result:
ok 1 number(s): "13"
Test #14:
score: 0
Accepted
time: 0ms
memory: 3644kb
input:
60 60 16 8
output:
11
result:
ok 1 number(s): "11"
Test #15:
score: 0
Accepted
time: 0ms
memory: 3568kb
input:
60 60 16 16
output:
11
result:
ok 1 number(s): "11"
Test #16:
score: 0
Accepted
time: 0ms
memory: 3616kb
input:
60 60 16 24
output:
9
result:
ok 1 number(s): "9"
Test #17:
score: 0
Accepted
time: 0ms
memory: 3564kb
input:
75 15 1 1
output:
175
result:
ok 1 number(s): "175"
Test #18:
score: 0
Accepted
time: 0ms
memory: 3584kb
input:
50 100 1 0
output:
-1
result:
ok 1 number(s): "-1"
Test #19:
score: 0
Accepted
time: 0ms
memory: 3608kb
input:
100 100 10 10
output:
35
result:
ok 1 number(s): "35"
Test #20:
score: 0
Accepted
time: 0ms
memory: 3636kb
input:
100 100 10 1
output:
37
result:
ok 1 number(s): "37"
Test #21:
score: 0
Accepted
time: 0ms
memory: 3608kb
input:
100 100 10 20
output:
33
result:
ok 1 number(s): "33"
Test #22:
score: 0
Accepted
time: 0ms
memory: 3564kb
input:
100 100 10 30
output:
31
result:
ok 1 number(s): "31"
Test #23:
score: 0
Accepted
time: 0ms
memory: 3696kb
input:
100 100 10 80
output:
21
result:
ok 1 number(s): "21"
Test #24:
score: 0
Accepted
time: 0ms
memory: 3680kb
input:
100 100 1 100
output:
199
result:
ok 1 number(s): "199"
Test #25:
score: -100
Wrong Answer
time: 0ms
memory: 3540kb
input:
100 100 5 0
output:
97
result:
wrong answer 1st numbers differ - expected: '95', found: '97'