#include <iostream> using namespace std; #define REP(x,n) for(int x=0;x<(n);++x) const int MAX_M = 201720; int cnt[MAX_M]; int main() { ios_base::sync_with_stdio(0); int n,a; cin>>n; REP(x,n) { cin>>a; ++cnt[a]; } int wyn=0, sum=0; REP(x,MAX_M) { if(sum) wyn=x; sum=(sum>>1)+cnt[x]; } while(sum) { sum>>=1; ++wyn; } cout<<wyn-1; return 0; }
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 | #include <iostream> using namespace std; #define REP(x,n) for(int x=0;x<(n);++x) const int MAX_M = 201720; int cnt[MAX_M]; int main() { ios_base::sync_with_stdio(0); int n,a; cin>>n; REP(x,n) { cin>>a; ++cnt[a]; } int wyn=0, sum=0; REP(x,MAX_M) { if(sum) wyn=x; sum=(sum>>1)+cnt[x]; } while(sum) { sum>>=1; ++wyn; } cout<<wyn-1; return 0; } |