Submission #789444

#TimeUsernameProblemLanguageResultExecution timeMemory
789444AcanikolicBaloni (COCI15_baloni)C++17
0 / 100
189 ms7260 KiB
#include <bits/stdc++.h> #define ll long long #define int long long #define pb push_back #define F first #define S second using namespace std; const long long N = 2e5+10; const long long mod = 1e9+7; const long long inf = 1e18; signed main() { ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL); int n,res = 0; cin >> n; vector<int>a(n); for(int i=0;i<n;i++) cin >> a[i]; map<int,bool>mp; for(int i=0;i<n;i++) { if(!mp[a[i]]) res++; mp[a[i]] = false; mp[a[i]-1] = true; } cout << res; return 0; }
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