-
-
Notifications
You must be signed in to change notification settings - Fork 300
/
1115.cpp
78 lines (66 loc) · 1.92 KB
/
1115.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
__________________________________________________________________________________________________
sample 72 ms submission
class FooBar {
private:
int n;
atomic_bool state;
public:
FooBar(int n) {
this->n = n;
state = false;
}
void foo(function<void()> printFoo) {
for (int i = 0; i < n; i++) {
while( state )
this_thread::yield();
// printFoo() outputs "foo". Do not change or remove this line.
printFoo();
state = !state;
}
}
void bar(function<void()> printBar) {
for (int i = 0; i < n; i++) {
while( !state )
this_thread::yield();
// printBar() outputs "bar". Do not change or remove this line.
printBar();
state = !state;
}
}
};
__________________________________________________________________________________________________
sample 88 ms submission
class FooBar {
private:
int n;
atomic<bool> goFoo, goBar;
public:
FooBar(int n) {
this->n = n;
goFoo = true;
goBar = false;
}
void foo(function<void()> printFoo) {
for (int i = 0; i < n; i++) {
while (!goFoo) {
this_thread::yield();
}
// printFoo() outputs "foo". Do not change or remove this line.
printFoo();
goFoo = false;
goBar = true;
}
}
void bar(function<void()> printBar) {
for (int i = 0; i < n; i++) {
while (!goBar){
this_thread::yield();
}
// printBar() outputs "bar". Do not change or remove this line.
printBar();
goBar = false;
goFoo = true;
}
}
};
__________________________________________________________________________________________________