QOJ.ac
QOJ
| ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
|---|---|---|---|---|---|---|---|---|---|
| #776761 | #7781. Sheep Eat Wolves | ucup-team1412 | WA | 1ms | 3636kb | C++23 | 4.2kb | 2024-11-23 20:52:41 | 2024-11-23 20:52:41 |
Judging History
answer
#include <iostream>
using namespace std;
typedef long long ll;
#define endl '\n'
signed main() {
ios::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
ll x, y, p, q;
cin >> x >> y >> p >> q;
ll ls = x, lw = y, rw = 0, rs = 0, ow = 0, os = 0;
ll loc = 0;
bool ok1 = true;
ll cnt1 = 0;
while (rs < x) {
ll onship = 0;
if (cnt1 > 5000) {
break;
}
if (loc == 0) {
if (ls <= p) {
cnt1++;
break;
}
while (lw > ls + q) {
lw--;
onship++;
ow++;
if (onship > p) {
ok1 = false;
break;
}
}
if (!ok1) break;
while (ls + q > lw && onship < p) {
ls--;
os++;
onship++;
}
while (onship < p) {
lw--;
onship++;
ow++;
if (onship < p) {
ls--;
onship++;
os++;
}
}
rw += ow;
rs += os;
ow = 0;
os = 0;
onship = 0;
cnt1++;
loc = 1;
}
else {
while (rw > rs + q && rs != 0) {
ow++;
rw--;
onship++;
if (onship > p) {
ok1 = false;
break;
}
}
if (!ok1) break;
lw += ow;
ow = 0;
onship = 0;
cnt1++;
loc = 0;
}
}
ls = x, lw = y, rw = 0, rs = 0, ow = 0, os = 0;
loc = 0;
bool ok2 = true;
ll cnt2 = 0;
if (ls > p) {
ls -= p;
lw -= p;
rw += p;
rs += p;
cnt2 += 4;
if (lw > ls + q) ok2 = false;
else {
while (rs < x) {
ll onship = 0;
if (cnt2 > 5000) {
break;
}
if (loc == 0) {
if (ls <= p) {
cnt2++;
break;
}
while (lw > ls + q) {
lw--;
onship++;
ow++;
if (onship > p) {
ok2 = false;
break;
}
}
if (!ok2) break;
while (ls + q > lw && onship < p) {
ls--;
os++;
onship++;
}
while (onship < p) {
lw--;
onship++;
ow++;
if (onship < p) {
ls--;
onship++;
os++;
}
}
rw += ow;
rs += os;
ow = 0;
os = 0;
onship = 0;
cnt2++;
loc = 2;
}
else {
while (rw > rs + q && rs != 0) {
ow++;
rw--;
onship++;
if (onship > p) {
ok2 = false;
break;
}
}
if (!ok2) break;
lw += ow;
ow = 0;
onship = 0;
cnt2++;
loc = 0;
}
}
}
}
if (cnt2 > 5000) cout << -1;
else if (ok1 && ok2) {
cout << min(cnt1, cnt2);
}
else if (ok1) cout << cnt1;
else if (ok2) cout << cnt2;
else cout << -1;
return 0;
}
详细
Test #1:
score: 100
Accepted
time: 1ms
memory: 3552kb
input:
4 4 3 1
output:
3
result:
ok 1 number(s): "3"
Test #2:
score: 0
Accepted
time: 0ms
memory: 3628kb
input:
3 5 2 0
output:
5
result:
ok 1 number(s): "5"
Test #3:
score: 0
Accepted
time: 0ms
memory: 3636kb
input:
2 5 1 1
output:
-1
result:
ok 1 number(s): "-1"
Test #4:
score: -100
Wrong Answer
time: 0ms
memory: 3628kb
input:
1 1 1 0
output:
0
result:
wrong answer 1st numbers differ - expected: '1', found: '0'