A doubt regarding vector STL!

double_slit's blog

By double_slit, history, 6 years ago, In English

The only difference in two submission was checking the vector size. Can anyone explain this to me?

https://mirror.codeforces.com/contest/1419/submission/93209485 https://mirror.codeforces.com/contest/1419/submission/93264983

-7

double_slit
6 years ago
2

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Actium

6 years ago, hide # |

← Rev. 2 →

Not only checking vector size.

Diffs

$ diff 1 2
176c176
<      v[!i%2].pb(x%2);
---
>      v[(i+1)%2].pb(x%2);
187c187
<     if(count(v[1].begin(),v[1].end(),1)!=0)
---
>     if(v[1].size()>0 && count(v[1].begin(),v[1].end(),1)!=0)
195c195
<     if(count(v[0].begin(),v[0].end(),0)!=0)
---
>     if(v[0].size()>0 && count(v[0].begin(),v[0].end(),0)!=0)

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