QOJ.ac
QOJ
| ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
|---|---|---|---|---|---|---|---|---|---|
| #590720 | #7781. Sheep Eat Wolves | texiw | AC ✓ | 0ms | 3716kb | C++20 | 3.2kb | 2024-09-26 10:29:58 | 2024-09-26 10:30:00 |
Judging History
answer
// #pragma GCC optimize(2)
// #pragma GCC optimize(3, "Ofast", "inline")
#include <bits/stdc++.h>
using i64 = long long;
using u64 = unsigned long long;
using u32 = unsigned int;
signed main() {
std::cin.tie(0)->sync_with_stdio(0);
int x, y, p, q; std::cin >> x >> y >> p >> q;
int x2{}, y2{};
int ox = x, oy = y;
bool flag = 0;
int s;
int cnt{};
int tle = 0;
if (y - x > q) {
goto S1;
}
// ?????????, ?????, ???????????
x -= p;
x2 += p;
cnt += 2;
if (x <= 0) {
std::cout << 1 << "\n";
return 0;
}
S1:
s = std::min(y, p);
y -= s;
y2 += s;
cnt += 2;
if (y - x == q) {
s = std::min(y, p);
y -= s;
y2 += s;
cnt += 2;
}
while (1) {
++tle;
if (tle == 200) break;
// std::cout << x << " " << y << " " << x2 << " " << y2 << "\n";
if (!flag) {
++cnt;
int d = (y - x + p - q + 1) / 2;
// std::cout << d << "\n";
// ?????, ???????????
if (p >= x) break;
// ?? p - d < 0 , ??????????, ????
if (p < d) {
std::cout << "-1\n";
return 0;
}
// ????????? p - d ? x ?
// if (p - d >= x) {
// break;
// }
if (d > 0) {
x -= p - d;
y -= d;
x2 += p - d;
y2 += d;
} else {
x -= p;
x2 += p;
}
flag = !flag;
} else {
++cnt;
int d = y2 - x2 - q;
// std::cout << d << "\n";
if (d > p && x2 != 0) {
std::cout << "-1\n";
return 0;
}
if (d > 0 && x2 != 0) {
y2 -= d;
y += d;
}
flag = !flag;
}
}
S2:
x = ox, y = oy, x2 = 0, y2 = 0, flag = 0;
int cnt2{};
while (1) {
// std::cout << x << " " << y << " " << x2 << " " << y2 << "\n";
if (!flag) {
++cnt2;
int d = (y - x + p - q + 1) / 2;
// std::cout << d << "\n";
// ?????, ???????????
if (p >= x) break;
// ?? p - d < 0 , ??????????, ????
if (p < d) {
std::cout << "-1\n";
return 0;
}
// ????????? p - d ? x ?
// if (p - d >= x) {
// break;
// }
if (d > 0) {
x -= p - d;
y -= d;
x2 += p - d;
y2 += d;
} else {
x -= p;
x2 += p;
}
flag = !flag;
} else {
++cnt2;
int d = y2 - x2 - q;
// std::cout << d << "\n";
if (d > p && x2 != 0) {
std::cout << "-1\n";
return 0;
}
if (d > 0 && x2 != 0) {
y2 -= d;
y += d;
}
flag = !flag;
}
}
// std::cout << cnt << " " << cnt2 << "\n";
std::cout << std::min(cnt, cnt2) << "\n";
}
这程序好像有点Bug，我给组数据试试？
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 3584kb
input:
4 4 3 1
output:
3
result:
ok 1 number(s): "3"
Test #2:
score: 0
Accepted
time: 0ms
memory: 3588kb
input:
3 5 2 0
output:
5
result:
ok 1 number(s): "5"
Test #3:
score: 0
Accepted
time: 0ms
memory: 3632kb
input:
2 5 1 1
output:
-1
result:
ok 1 number(s): "-1"
Test #4:
score: 0
Accepted
time: 0ms
memory: 3576kb
input:
1 1 1 0
output:
1
result:
ok 1 number(s): "1"
Test #5:
score: 0
Accepted
time: 0ms
memory: 3644kb
input:
3 3 1 1
output:
7
result:
ok 1 number(s): "7"
Test #6:
score: 0
Accepted
time: 0ms
memory: 3652kb
input:
3 3 2 1
output:
3
result:
ok 1 number(s): "3"
Test #7:
score: 0
Accepted
time: 0ms
memory: 3656kb
input:
10 9 1 10
output:
19
result:
ok 1 number(s): "19"
Test #8:
score: 0
Accepted
time: 0ms
memory: 3644kb
input:
15 20 2 5
output:
27
result:
ok 1 number(s): "27"
Test #9:
score: 0
Accepted
time: 0ms
memory: 3580kb
input:
18 40 16 7
output:
5
result:
ok 1 number(s): "5"
Test #10:
score: 0
Accepted
time: 0ms
memory: 3716kb
input:
60 60 8 1
output:
27
result:
ok 1 number(s): "27"
Test #11:
score: 0
Accepted
time: 0ms
memory: 3644kb
input:
60 60 8 4
output:
27
result:
ok 1 number(s): "27"
Test #12:
score: 0
Accepted
time: 0ms
memory: 3580kb
input:
60 60 8 8
output:
25
result:
ok 1 number(s): "25"
Test #13:
score: 0
Accepted
time: 0ms
memory: 3576kb
input:
60 60 16 1
output:
13
result:
ok 1 number(s): "13"
Test #14:
score: 0
Accepted
time: 0ms
memory: 3584kb
input:
60 60 16 8
output:
11
result:
ok 1 number(s): "11"
Test #15:
score: 0
Accepted
time: 0ms
memory: 3584kb
input:
60 60 16 16
output:
11
result:
ok 1 number(s): "11"
Test #16:
score: 0
Accepted
time: 0ms
memory: 3704kb
input:
60 60 16 24
output:
9
result:
ok 1 number(s): "9"
Test #17:
score: 0
Accepted
time: 0ms
memory: 3572kb
input:
75 15 1 1
output:
175
result:
ok 1 number(s): "175"
Test #18:
score: 0
Accepted
time: 0ms
memory: 3708kb
input:
50 100 1 0
output:
-1
result:
ok 1 number(s): "-1"
Test #19:
score: 0
Accepted
time: 0ms
memory: 3560kb
input:
100 100 10 10
output:
35
result:
ok 1 number(s): "35"
Test #20:
score: 0
Accepted
time: 0ms
memory: 3672kb
input:
100 100 10 1
output:
37
result:
ok 1 number(s): "37"
Test #21:
score: 0
Accepted
time: 0ms
memory: 3644kb
input:
100 100 10 20
output:
33
result:
ok 1 number(s): "33"
Test #22:
score: 0
Accepted
time: 0ms
memory: 3576kb
input:
100 100 10 30
output:
31
result:
ok 1 number(s): "31"
Test #23:
score: 0
Accepted
time: 0ms
memory: 3672kb
input:
100 100 10 80
output:
21
result:
ok 1 number(s): "21"
Test #24:
score: 0
Accepted
time: 0ms
memory: 3704kb
input:
100 100 1 100
output:
199
result:
ok 1 number(s): "199"
Test #25:
score: 0
Accepted
time: 0ms
memory: 3576kb
input:
100 100 5 0
output:
95
result:
ok 1 number(s): "95"
Test #26:
score: 0
Accepted
time: 0ms
memory: 3664kb
input:
100 100 25 3
output:
13
result:
ok 1 number(s): "13"
Test #27:
score: 0
Accepted
time: 0ms
memory: 3652kb
input:
100 100 30 4
output:
11
result:
ok 1 number(s): "11"
Test #28:
score: 0
Accepted
time: 0ms
memory: 3708kb
input:
95 100 3 3
output:
125
result:
ok 1 number(s): "125"
Test #29:
score: 0
Accepted
time: 0ms
memory: 3592kb
input:
98 99 50 6
output:
5
result:
ok 1 number(s): "5"
Test #30:
score: 0
Accepted
time: 0ms
memory: 3584kb
input:
100 100 45 4
output:
7
result:
ok 1 number(s): "7"
Test #31:
score: 0
Accepted
time: 0ms
memory: 3596kb
input:
100 100 40 39
output:
7
result:
ok 1 number(s): "7"
Test #32:
score: 0
Accepted
time: 0ms
memory: 3660kb
input:
100 100 45 19
output:
7
result:
ok 1 number(s): "7"
Test #33:
score: 0
Accepted
time: 0ms
memory: 3700kb
input:
100 100 49 99
output:
5
result:
ok 1 number(s): "5"
Test #34:
score: 0
Accepted
time: 0ms
memory: 3612kb
input:
100 100 49 100
output:
5
result:
ok 1 number(s): "5"
Test #35:
score: 0
Accepted
time: 0ms
memory: 3668kb
input:
100 100 49 98
output:
5
result:
ok 1 number(s): "5"
Test #36:
score: 0
Accepted
time: 0ms
memory: 3576kb
input:
100 100 49 97
output:
5
result:
ok 1 number(s): "5"
Test #37:
score: 0
Accepted
time: 0ms
memory: 3652kb
input:
100 100 49 96
output:
5
result:
ok 1 number(s): "5"
Test #38:
score: 0
Accepted
time: 0ms
memory: 3584kb
input:
100 100 49 95
output:
5
result:
ok 1 number(s): "5"
Test #39:
score: 0
Accepted
time: 0ms
memory: 3576kb
input:
100 100 100 0
output:
1
result:
ok 1 number(s): "1"
Test #40:
score: 0
Accepted
time: 0ms
memory: 3700kb
input:
1 100 1 0
output:
1
result:
ok 1 number(s): "1"
Test #41:
score: 0
Accepted
time: 0ms
memory: 3704kb
input:
90 100 5 5
output:
87
result:
ok 1 number(s): "87"
Test #42:
score: 0
Accepted
time: 0ms
memory: 3632kb
input:
100 1 1 0
output:
199
result:
ok 1 number(s): "199"
Test #43:
score: 0
Accepted
time: 0ms
memory: 3656kb
input:
94 61 22 35
output:
9
result:
ok 1 number(s): "9"
Test #44:
score: 0
Accepted
time: 0ms
memory: 3636kb
input:
61 92 36 6
output:
7
result:
ok 1 number(s): "7"
Test #45:
score: 0
Accepted
time: 0ms
memory: 3672kb
input:
73 89 12 4
output:
57
result:
ok 1 number(s): "57"
Test #46:
score: 0
Accepted
time: 0ms
memory: 3636kb
input:
71 80 4 3
output:
-1
result:
ok 1 number(s): "-1"
Test #47:
score: 0
Accepted
time: 0ms
memory: 3612kb
input:
44 75 2 31
output:
85
result:
ok 1 number(s): "85"
Test #48:
score: 0
Accepted
time: 0ms
memory: 3636kb
input:
48 62 5 18
output:
35
result:
ok 1 number(s): "35"
Test #49:
score: 0
Accepted
time: 0ms
memory: 3648kb
input:
73 100 22 49
output:
9
result:
ok 1 number(s): "9"
Extra Test:
score: 0
Extra Test Passed