Submission #1178570

#TimeUsernameProblemLanguageResultExecution timeMemory
1178570MoonnInfinite Race (EGOI24_infiniterace2)C++20
29 / 100
10 ms1860 KiB
#pragma GCC optimize("O3") #include<bits/stdc++.h> #define ll long long #define endl "\n" #define AI ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0); using namespace std; const ll sz=1e6+4; void solve() { ll n,q,x,ma=0,i,ans=0; cin>>n>>q; ll sa[n+1]={0}; for(i=0;i<q;i++) { cin>>x; if(x>0) { sa[x]++; if(sa[x]>1) ans++; } else { x=abs(x); sa[x]=0; } } cout<<ans<<endl; } int main() { AI //freopen("input.txt", "r", stdin); //freopen("output.txt", "w", stdout); ll t; t=1; while(t--) solve(); }
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