QOJ.ac
QOJ
| ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
|---|---|---|---|---|---|---|---|---|---|
| #629664 | #7781. Sheep Eat Wolves | Mrlaolu# | WA | 0ms | 3712kb | C++20 | 2.1kb | 2024-10-11 14:08:41 | 2024-10-11 14:08:41 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
#define int long long
#define endl "\n"
void solve() {
int x,y,p,q;cin >> x >> y >> p >> q;
if(y - p > x + q){cout << -1 << endl;return;}
int ans = 0;
int lx,ly,tx,ty,rx,ry;
lx = x,ly = y,tx = ty = rx = ry = 0;
while(lx) {
if(lx <= p){ans++;break;}
ly += ty;lx += tx;ty = 0;tx = 0;
int spare = p - ty - tx;
if(lx + q < ly) {
int add = min(ly - lx - q,spare);
ty += add;ly -= add;
}
spare = p - ty - tx;
if(lx + q > ly) {
int add = min(lx + q - ly ,spare);
tx += add;lx -= add;
}
spare = p - ty - tx;
if(lx + q == ly && spare) {
ty += spare / 2;ly -= spare / 2;
tx += spare / 2;lx -= spare / 2;
if(spare % 2) {
ty += 1;ly -= 1;
}
}
spare = p - ty - tx;
ans++;
if(lx + q < ly){ans = -1;break;} //?
ry += ty;rx += tx;ty = 0;tx = 0;
spare = p - ty - tx;
ans++;
if(rx == 0){continue;}
if(rx + q < ry) {
int add = min(ry - rx - q,spare);
ty += add;ry -= add;
}
if(rx + q < ry){ans = -1;break;}
}
cout << ans << endl;
}
signed main() {
ios::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
int _ = 1;
//cin >> _;
while(_--) {
solve();
}
}
// while(lx) {
// if(lx <= p){ans++;lx = 0;break;}
// else if(ly == q + lx) {
// ans += 2;
// if(q % 2 == 0) {
// ly -= q / 2;
// lx -= q / 2;
// ry += q / 2;
// rx += q / 2;
// }else {
// ly -= q / 2;
// lx -= q / 2 + 1;
// ry += q / 2;
// rx += q / 2 + 1;
// }
// }else {
// ans += 2;
// int mx = 0,my = 0;
// mx = min(p,lx + q - ly);
// my = p - mx;
// lx -= mx;rx += mx;
// ly -= my;ry += my;
// }
// // if(ry - p > rx){ans = -1;break;}
// }
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 0ms
memory: 3712kb
input:
4 4 3 1
output:
3
result:
ok 1 number(s): "3"
Test #2:
score: 0
Accepted
time: 0ms
memory: 3708kb
input:
3 5 2 0
output:
5
result:
ok 1 number(s): "5"
Test #3:
score: 0
Accepted
time: 0ms
memory: 3584kb
input:
2 5 1 1
output:
-1
result:
ok 1 number(s): "-1"
Test #4:
score: 0
Accepted
time: 0ms
memory: 3584kb
input:
1 1 1 0
output:
1
result:
ok 1 number(s): "1"
Test #5:
score: 0
Accepted
time: 0ms
memory: 3632kb
input:
3 3 1 1
output:
7
result:
ok 1 number(s): "7"
Test #6:
score: 0
Accepted
time: 0ms
memory: 3704kb
input:
3 3 2 1
output:
3
result:
ok 1 number(s): "3"
Test #7:
score: 0
Accepted
time: 0ms
memory: 3660kb
input:
10 9 1 10
output:
19
result:
ok 1 number(s): "19"
Test #8:
score: 0
Accepted
time: 0ms
memory: 3704kb
input:
15 20 2 5
output:
27
result:
ok 1 number(s): "27"
Test #9:
score: 0
Accepted
time: 0ms
memory: 3660kb
input:
18 40 16 7
output:
5
result:
ok 1 number(s): "5"
Test #10:
score: 0
Accepted
time: 0ms
memory: 3584kb
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: 3576kb
input:
60 60 8 8
output:
25
result:
ok 1 number(s): "25"
Test #13:
score: 0
Accepted
time: 0ms
memory: 3656kb
input:
60 60 16 1
output:
13
result:
ok 1 number(s): "13"
Test #14:
score: 0
Accepted
time: 0ms
memory: 3572kb
input:
60 60 16 8
output:
11
result:
ok 1 number(s): "11"
Test #15:
score: 0
Accepted
time: 0ms
memory: 3656kb
input:
60 60 16 16
output:
11
result:
ok 1 number(s): "11"
Test #16:
score: 0
Accepted
time: 0ms
memory: 3584kb
input:
60 60 16 24
output:
9
result:
ok 1 number(s): "9"
Test #17:
score: 0
Accepted
time: 0ms
memory: 3648kb
input:
75 15 1 1
output:
175
result:
ok 1 number(s): "175"
Test #18:
score: 0
Accepted
time: 0ms
memory: 3656kb
input:
50 100 1 0
output:
-1
result:
ok 1 number(s): "-1"
Test #19:
score: 0
Accepted
time: 0ms
memory: 3576kb
input:
100 100 10 10
output:
35
result:
ok 1 number(s): "35"
Test #20:
score: 0
Accepted
time: 0ms
memory: 3660kb
input:
100 100 10 1
output:
37
result:
ok 1 number(s): "37"
Test #21:
score: 0
Accepted
time: 0ms
memory: 3704kb
input:
100 100 10 20
output:
33
result:
ok 1 number(s): "33"
Test #22:
score: 0
Accepted
time: 0ms
memory: 3656kb
input:
100 100 10 30
output:
31
result:
ok 1 number(s): "31"
Test #23:
score: 0
Accepted
time: 0ms
memory: 3588kb
input:
100 100 10 80
output:
21
result:
ok 1 number(s): "21"
Test #24:
score: 0
Accepted
time: 0ms
memory: 3588kb
input:
100 100 1 100
output:
199
result:
ok 1 number(s): "199"
Test #25:
score: -100
Wrong Answer
time: 0ms
memory: 3656kb
input:
100 100 5 0
output:
97
result:
wrong answer 1st numbers differ - expected: '95', found: '97'