Submission #754189

#	Time	Username	Problem	Language	Result	Execution time	Memory
754189		nicksms	Jousting tournament (IOI12_tournament)	C++17	100 / 100	177 ms	5988 KiB

tournament

#include <bits/extc++.h>
int a[100001],s[100001],e[100001];

int GetBestPosition(int N, int C, int R, int *K, int *S, int *E) {
  struct p {int x,y;};
  __gnu_cxx::rope<p> g;
  int cnt = 0;
  for (int i = 0; i < N-1; i++) if (K[i] > R) 
    s[i+1]++,e[i]++,cnt++;
  for (int i = 0; i < N; i++) 
    s[i+1]+=s[i],e[N-1-i]+=e[N-i],g.push_back({i,i});
  for (int i = 0; i < C; i++) {
    int l=g[S[i]].x,r=g[E[i]].y;
    g.erase(S[i],E[i]-S[i]+1);
    g.insert(S[i],{l,r});
    if (s[l]+e[r]==cnt) a[l]++,a[r+1]--;
  }
  int c=a[0],b=c,j=0;
  for (int i = 1; i <= N; i++) if (b < (c+=a[i])) b=c,j=i;
  return j;
}

• Subtask 1: 17 / 17
• Subtask 2: 32 / 32
• Subtask 3: 51 / 51