#include <iostream>
#include <algorithm>
using namespace std;
int e[1005005],i,ok1,ok2,a[1005005],b[1005005],n,d[1005005],pp[1001],f[1000005],p;
void make()
{
int t=0,i;
for (i=1;(i<=e[0]||t)&&i<=1005004;++i)
{
e[i]+=t;
t=0;
if (e[i]>=0) {t=e[i]/2; e[i]%=2;}
else {t=(e[i]-1)/2; e[i]=(e[i]%2+2)%2;}
}
e[0]=i-1;
if (i>1005000) e[0]=1,e[1]=-1;
else while (e[e[0]]==0&&e[0]!=0) e[0]--;
}
int main()
{
ios_base::sync_with_stdio(NULL);
cin.tie(0);
cout.tie(0);
cin>>n;
for (i=1;i<=n;++i)
{
cin>>a[i];
if (a[i]!=0) ok1=1;
cin>>b[i];
if (b[i]!=0) ok2=1;
d[i]=a[i]-b[i];
e[i]=d[i];
}
e[0]=n;
if (!ok1&&!ok2) {cout<<"Yes"; return 0;}
else if (!ok2) {cout<<"No"; return 0;}
make();
while (true)
{
if (e[0]==0) { break;}
if (e[e[0]]<0) {cout<<"No"; return 0;}
if (e[1]==0) {pp[++pp[0]]=0; for (i=1;i<e[0];++i) e[i]=e[i+1]; e[e[0]]=0; e[0]--;}
else
{
pp[++pp[0]]=1;
for (i=1;i<=n;++i)
e[i]--;
e[0]=max(e[0],n);
make();
}
}
reverse(pp+1,pp+pp[0]+1);
for (i=1;i<=pp[0];++i)
{
if (pp[i]==0) p*=2;
else p++;
}
f[n]=p;
for (i=n;i>=2;--i)
{
f[i-1]=f[i]*2-d[i];
if (f[i-1]<0) {cout<<"No"; return 0;}
}
cout<<"Yes";
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
4 ms |
4180 KB |
Output is correct |
2 |
Correct |
0 ms |
340 KB |
Output is correct |
3 |
Correct |
1 ms |
340 KB |
Output is correct |
4 |
Correct |
1 ms |
340 KB |
Output is correct |
5 |
Correct |
0 ms |
340 KB |
Output is correct |
6 |
Correct |
1 ms |
340 KB |
Output is correct |
7 |
Correct |
1 ms |
340 KB |
Output is correct |
8 |
Correct |
0 ms |
340 KB |
Output is correct |
9 |
Correct |
0 ms |
340 KB |
Output is correct |
10 |
Correct |
0 ms |
340 KB |
Output is correct |
11 |
Correct |
0 ms |
340 KB |
Output is correct |
12 |
Correct |
4 ms |
4180 KB |
Output is correct |
13 |
Correct |
4 ms |
4180 KB |
Output is correct |
14 |
Correct |
4 ms |
4180 KB |
Output is correct |
15 |
Correct |
4 ms |
4180 KB |
Output is correct |
16 |
Correct |
1 ms |
340 KB |
Output is correct |
17 |
Correct |
5 ms |
4180 KB |
Output is correct |
18 |
Correct |
0 ms |
340 KB |
Output is correct |
19 |
Correct |
0 ms |
340 KB |
Output is correct |
20 |
Correct |
0 ms |
340 KB |
Output is correct |
21 |
Correct |
0 ms |
340 KB |
Output is correct |
22 |
Correct |
1 ms |
340 KB |
Output is correct |
23 |
Correct |
1 ms |
340 KB |
Output is correct |
24 |
Correct |
1 ms |
340 KB |
Output is correct |
25 |
Correct |
4 ms |
4264 KB |
Output is correct |
26 |
Correct |
1 ms |
340 KB |
Output is correct |
27 |
Correct |
5 ms |
4260 KB |
Output is correct |
28 |
Correct |
0 ms |
340 KB |
Output is correct |
29 |
Correct |
0 ms |
340 KB |
Output is correct |
30 |
Correct |
4 ms |
4180 KB |
Output is correct |
31 |
Correct |
0 ms |
340 KB |
Output is correct |
32 |
Correct |
1 ms |
340 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
4 ms |
4180 KB |
Output is correct |
2 |
Correct |
0 ms |
340 KB |
Output is correct |
3 |
Correct |
1 ms |
340 KB |
Output is correct |
4 |
Correct |
1 ms |
340 KB |
Output is correct |
5 |
Correct |
0 ms |
340 KB |
Output is correct |
6 |
Correct |
1 ms |
340 KB |
Output is correct |
7 |
Correct |
1 ms |
340 KB |
Output is correct |
8 |
Correct |
0 ms |
340 KB |
Output is correct |
9 |
Correct |
0 ms |
340 KB |
Output is correct |
10 |
Correct |
0 ms |
340 KB |
Output is correct |
11 |
Correct |
0 ms |
340 KB |
Output is correct |
12 |
Correct |
4 ms |
4180 KB |
Output is correct |
13 |
Correct |
4 ms |
4180 KB |
Output is correct |
14 |
Correct |
4 ms |
4180 KB |
Output is correct |
15 |
Correct |
4 ms |
4180 KB |
Output is correct |
16 |
Correct |
1 ms |
340 KB |
Output is correct |
17 |
Correct |
5 ms |
4180 KB |
Output is correct |
18 |
Correct |
0 ms |
340 KB |
Output is correct |
19 |
Correct |
0 ms |
340 KB |
Output is correct |
20 |
Correct |
0 ms |
340 KB |
Output is correct |
21 |
Correct |
0 ms |
340 KB |
Output is correct |
22 |
Correct |
1 ms |
340 KB |
Output is correct |
23 |
Correct |
1 ms |
340 KB |
Output is correct |
24 |
Correct |
1 ms |
340 KB |
Output is correct |
25 |
Correct |
4 ms |
4264 KB |
Output is correct |
26 |
Correct |
1 ms |
340 KB |
Output is correct |
27 |
Correct |
5 ms |
4260 KB |
Output is correct |
28 |
Correct |
0 ms |
340 KB |
Output is correct |
29 |
Correct |
0 ms |
340 KB |
Output is correct |
30 |
Correct |
4 ms |
4180 KB |
Output is correct |
31 |
Correct |
0 ms |
340 KB |
Output is correct |
32 |
Correct |
1 ms |
340 KB |
Output is correct |
33 |
Correct |
4 ms |
4180 KB |
Output is correct |
34 |
Correct |
0 ms |
340 KB |
Output is correct |
35 |
Correct |
0 ms |
340 KB |
Output is correct |
36 |
Correct |
0 ms |
340 KB |
Output is correct |
37 |
Correct |
0 ms |
340 KB |
Output is correct |
38 |
Correct |
0 ms |
340 KB |
Output is correct |
39 |
Correct |
0 ms |
340 KB |
Output is correct |
40 |
Correct |
0 ms |
340 KB |
Output is correct |
41 |
Correct |
0 ms |
340 KB |
Output is correct |
42 |
Correct |
5 ms |
4180 KB |
Output is correct |
43 |
Correct |
4 ms |
4180 KB |
Output is correct |
44 |
Correct |
4 ms |
4180 KB |
Output is correct |
45 |
Correct |
4 ms |
4180 KB |
Output is correct |
46 |
Correct |
4 ms |
4180 KB |
Output is correct |
47 |
Correct |
1 ms |
340 KB |
Output is correct |
48 |
Correct |
4 ms |
4180 KB |
Output is correct |
49 |
Correct |
0 ms |
340 KB |
Output is correct |
50 |
Correct |
0 ms |
340 KB |
Output is correct |
51 |
Correct |
1 ms |
340 KB |
Output is correct |
52 |
Correct |
0 ms |
340 KB |
Output is correct |
53 |
Correct |
0 ms |
340 KB |
Output is correct |
54 |
Correct |
0 ms |
340 KB |
Output is correct |
55 |
Correct |
4 ms |
4180 KB |
Output is correct |
56 |
Correct |
1 ms |
340 KB |
Output is correct |
57 |
Correct |
4 ms |
4180 KB |
Output is correct |
58 |
Correct |
0 ms |
340 KB |
Output is correct |
59 |
Correct |
0 ms |
340 KB |
Output is correct |
60 |
Correct |
5 ms |
4180 KB |
Output is correct |
61 |
Correct |
0 ms |
340 KB |
Output is correct |
62 |
Correct |
0 ms |
340 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
4 ms |
4180 KB |
Output is correct |
2 |
Correct |
0 ms |
340 KB |
Output is correct |
3 |
Correct |
1 ms |
340 KB |
Output is correct |
4 |
Correct |
1 ms |
340 KB |
Output is correct |
5 |
Correct |
0 ms |
340 KB |
Output is correct |
6 |
Correct |
1 ms |
340 KB |
Output is correct |
7 |
Correct |
1 ms |
340 KB |
Output is correct |
8 |
Correct |
0 ms |
340 KB |
Output is correct |
9 |
Correct |
0 ms |
340 KB |
Output is correct |
10 |
Correct |
0 ms |
340 KB |
Output is correct |
11 |
Correct |
0 ms |
340 KB |
Output is correct |
12 |
Correct |
4 ms |
4180 KB |
Output is correct |
13 |
Correct |
4 ms |
4180 KB |
Output is correct |
14 |
Correct |
4 ms |
4180 KB |
Output is correct |
15 |
Correct |
4 ms |
4180 KB |
Output is correct |
16 |
Correct |
1 ms |
340 KB |
Output is correct |
17 |
Correct |
5 ms |
4180 KB |
Output is correct |
18 |
Correct |
0 ms |
340 KB |
Output is correct |
19 |
Correct |
0 ms |
340 KB |
Output is correct |
20 |
Correct |
0 ms |
340 KB |
Output is correct |
21 |
Correct |
0 ms |
340 KB |
Output is correct |
22 |
Correct |
1 ms |
340 KB |
Output is correct |
23 |
Correct |
1 ms |
340 KB |
Output is correct |
24 |
Correct |
1 ms |
340 KB |
Output is correct |
25 |
Correct |
4 ms |
4264 KB |
Output is correct |
26 |
Correct |
1 ms |
340 KB |
Output is correct |
27 |
Correct |
5 ms |
4260 KB |
Output is correct |
28 |
Correct |
0 ms |
340 KB |
Output is correct |
29 |
Correct |
0 ms |
340 KB |
Output is correct |
30 |
Correct |
4 ms |
4180 KB |
Output is correct |
31 |
Correct |
0 ms |
340 KB |
Output is correct |
32 |
Correct |
1 ms |
340 KB |
Output is correct |
33 |
Correct |
4 ms |
4180 KB |
Output is correct |
34 |
Correct |
0 ms |
340 KB |
Output is correct |
35 |
Correct |
0 ms |
340 KB |
Output is correct |
36 |
Correct |
0 ms |
340 KB |
Output is correct |
37 |
Correct |
0 ms |
340 KB |
Output is correct |
38 |
Correct |
0 ms |
340 KB |
Output is correct |
39 |
Correct |
0 ms |
340 KB |
Output is correct |
40 |
Correct |
0 ms |
340 KB |
Output is correct |
41 |
Correct |
0 ms |
340 KB |
Output is correct |
42 |
Correct |
5 ms |
4180 KB |
Output is correct |
43 |
Correct |
4 ms |
4180 KB |
Output is correct |
44 |
Correct |
4 ms |
4180 KB |
Output is correct |
45 |
Correct |
4 ms |
4180 KB |
Output is correct |
46 |
Correct |
4 ms |
4180 KB |
Output is correct |
47 |
Correct |
1 ms |
340 KB |
Output is correct |
48 |
Correct |
4 ms |
4180 KB |
Output is correct |
49 |
Correct |
0 ms |
340 KB |
Output is correct |
50 |
Correct |
0 ms |
340 KB |
Output is correct |
51 |
Correct |
1 ms |
340 KB |
Output is correct |
52 |
Correct |
0 ms |
340 KB |
Output is correct |
53 |
Correct |
0 ms |
340 KB |
Output is correct |
54 |
Correct |
0 ms |
340 KB |
Output is correct |
55 |
Correct |
4 ms |
4180 KB |
Output is correct |
56 |
Correct |
1 ms |
340 KB |
Output is correct |
57 |
Correct |
4 ms |
4180 KB |
Output is correct |
58 |
Correct |
0 ms |
340 KB |
Output is correct |
59 |
Correct |
0 ms |
340 KB |
Output is correct |
60 |
Correct |
5 ms |
4180 KB |
Output is correct |
61 |
Correct |
0 ms |
340 KB |
Output is correct |
62 |
Correct |
0 ms |
340 KB |
Output is correct |
63 |
Correct |
180 ms |
15964 KB |
Output is correct |
64 |
Correct |
107 ms |
19780 KB |
Output is correct |
65 |
Correct |
258 ms |
19788 KB |
Output is correct |
66 |
Correct |
110 ms |
19796 KB |
Output is correct |
67 |
Correct |
116 ms |
19884 KB |
Output is correct |
68 |
Correct |
128 ms |
19896 KB |
Output is correct |
69 |
Correct |
236 ms |
19796 KB |
Output is correct |
70 |
Execution timed out |
1099 ms |
15864 KB |
Time limit exceeded |
71 |
Halted |
0 ms |
0 KB |
- |