Submission #146230

#TimeUsernameProblemLanguageResultExecution timeMemory
146230DiuvenXylophone (JOI18_xylophone)C++14
100 / 100
123 ms504 KiB
#include "xylophone.h" #include <algorithm> #include <iostream> using namespace std; static int P[5001], A[5001]; void solve(int n){ for(int i=2; i<=n; i++) P[i] = query(i-1, i); A[1] = 0; A[2] = P[2]; for(int i=3; i<=n; i++){ int x = query(i-2, i); int sg = A[i-1]>A[i-2] ? 1 : -1; if(x!=P[i-1]+P[i]) sg *= -1; A[i] = A[i-1] + sg*P[i]; } int m = *min_element(A+1, A+n+1); for(int i=1; i<=n; i++) A[i] -= m-1; int x=-1, y=-1; for(int i=1; i<=n; i++) if(A[i]==1) x=i; else if(A[i]==n) y=i; if(x>y) for(int i=1; i<=n; i++) A[i] = n-A[i]+1; for(int i=1; i<=n; i++) answer(i, A[i]); }
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