#include <bits/stdc++.h> using namespace std; const int N = 1e6 + 5; int n, a[N]; int main() { scanf("%d", &n); for (int i = 0; i < n; i++) { int x; scanf("%d", &x); a[x]++; } int res = 0; for (int i = 0; i < N; i++) { if (a[i] > 0) res = i; while (a[i] >= 2) { a[i+1]++; a[i] -= 2; } } printf("%d\n", res); 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 | #include <bits/stdc++.h> using namespace std; const int N = 1e6 + 5; int n, a[N]; int main() { scanf("%d", &n); for (int i = 0; i < n; i++) { int x; scanf("%d", &x); a[x]++; } int res = 0; for (int i = 0; i < N; i++) { if (a[i] > 0) res = i; while (a[i] >= 2) { a[i+1]++; a[i] -= 2; } } printf("%d\n", res); return 0; } |