Submission #9639441
Source Code Expand
// =================================== // author: M_sea // website: http://m-sea-blog.com/ // =================================== #include <bits/stdc++.h> #define re register using namespace std; inline int read() { int X=0,w=1; char c=getchar(); while (c<'0'||c>'9') { if (c=='-') w=-1; c=getchar(); } while (c>='0'&&c<='9') X=X*10+c-'0',c=getchar(); return X*w; } const int N=100+10; int n,a[N],o[N]; int main() { n=read(); for (re int i=1;i<=n;++i) ++o[a[i]=read()]; int d=0; for (re int i=1;i<=n;++i) d=max(d,a[i]); if (d&1) { int flag=1; for (re int i=d;i>(d+1)/2;--i) if (o[i]<2) flag=0; if (o[(d+1)/2]!=2) flag=0; for (re int i=(d-1)/2;i;--i) if (o[i]) flag=0; puts(flag?"Possible":"Impossible"); } else { int flag=1; for (re int i=d;i>d/2;--i) if (o[i]<2) flag=0; if (o[d/2]!=1) flag=0; for (re int i=d/2-1;i;--i) if (o[i]) flag=0; puts(flag?"Possible":"Impossible"); } return 0; }
Submission Info
Submission Time | |
---|---|
Task | C - Tree Restoring |
User | M_sea |
Language | C++14 (GCC 5.4.1) |
Score | 700 |
Code Size | 1026 Byte |
Status | AC |
Exec Time | 1 ms |
Memory | 256 KB |
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 700 / 700 | ||||
Status |
|
|
Set Name | Test Cases |
---|---|
Sample | example0, example1, example2, example3, example4, example5 |
All | almostline0, almostline1, almostline2, almostline3, can0, can1, can2, can3, can4, can5, can6, deg0, deg1, deg2, deg3, example0, example1, example2, example3, example4, example5, handmade0, line0, line1, line2, line3, ng10, ng11, ng12, ng13, ng20, ng21, ng22, ng23, plus0, plus1, plus2, plus3, rand0, rand1, rand2, star0, star1, star2, star3 |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
almostline0 | AC | 1 ms | 256 KB |
almostline1 | AC | 1 ms | 256 KB |
almostline2 | AC | 1 ms | 256 KB |
almostline3 | AC | 1 ms | 256 KB |
can0 | AC | 1 ms | 256 KB |
can1 | AC | 1 ms | 256 KB |
can2 | AC | 1 ms | 256 KB |
can3 | AC | 1 ms | 256 KB |
can4 | AC | 1 ms | 256 KB |
can5 | AC | 1 ms | 256 KB |
can6 | AC | 1 ms | 256 KB |
deg0 | AC | 1 ms | 256 KB |
deg1 | AC | 1 ms | 256 KB |
deg2 | AC | 1 ms | 256 KB |
deg3 | AC | 1 ms | 256 KB |
example0 | AC | 1 ms | 256 KB |
example1 | AC | 1 ms | 256 KB |
example2 | AC | 1 ms | 256 KB |
example3 | AC | 1 ms | 256 KB |
example4 | AC | 1 ms | 256 KB |
example5 | AC | 1 ms | 256 KB |
handmade0 | AC | 1 ms | 256 KB |
line0 | AC | 1 ms | 256 KB |
line1 | AC | 1 ms | 256 KB |
line2 | AC | 1 ms | 256 KB |
line3 | AC | 1 ms | 256 KB |
ng10 | AC | 1 ms | 256 KB |
ng11 | AC | 1 ms | 256 KB |
ng12 | AC | 1 ms | 256 KB |
ng13 | AC | 1 ms | 256 KB |
ng20 | AC | 1 ms | 256 KB |
ng21 | AC | 1 ms | 256 KB |
ng22 | AC | 1 ms | 256 KB |
ng23 | AC | 1 ms | 256 KB |
plus0 | AC | 1 ms | 256 KB |
plus1 | AC | 1 ms | 256 KB |
plus2 | AC | 1 ms | 256 KB |
plus3 | AC | 1 ms | 256 KB |
rand0 | AC | 1 ms | 256 KB |
rand1 | AC | 1 ms | 256 KB |
rand2 | AC | 1 ms | 256 KB |
star0 | AC | 1 ms | 256 KB |
star1 | AC | 1 ms | 256 KB |
star2 | AC | 1 ms | 256 KB |
star3 | AC | 1 ms | 256 KB |