제출 #233484

#제출 시각아이디문제언어결과실행 시간메모리
233484crossing0verDancing Elephants (IOI11_elephants)C++17
26 / 100
9020 ms3340 KiB
#include <bits/stdc++.h> #include "elephants.h" using namespace std; int n,L,P[100000]; int s[100000],g[100000]; bool cmp(int a,int b) { return P[a] < P[b]; } void init(int N, int L1, int X[]) { n = N; L = L1; for (int i = 0; i < n; i++) s[i] = i,P[i] = X[i]; sort(s,s+n,cmp); for (int i = 0; i < n; i++) g[s[i]] = i; } int last,ans,pos; int update(int i, int y) { P[i] = y; pos = g[i]; for (;pos < n - 1 && y > P[ s[pos + 1 ] ]; pos++) { g[ s[pos + 1 ]]--; swap(s[pos],s[pos + 1]); } for (;pos > 0 && y < P[ s[pos - 1 ] ]; pos--) { g[ s[pos - 1 ]]++; swap(s[pos],s[pos - 1]); } g[i] = pos; ans = 0; last = -1; for (i = 0; i < n; i++) if (last < P[s[i]]) ans++,last = P[s[i]] + L; return ans; }
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