Submission #120469

#	Time	Username	Problem	Language	Result	Execution time	Memory
120469		KieranHorgan	Crayfish scrivener (IOI12_scrivener)	C++17	Compilation error	0 ms	0 KiB

scrivener

#include "grader.h"
#include <bits/stdc++.h>
using namespace std;

char charOfStep[1000005];
int depth[1000005];
int kthAncestor[1000005][21];
int curStep = 0;

void Init() {}

void TypeLetter(char L) {
	curStep++;
	charOfStep[curStep] = L;
	depth[curStep] = depth[curStep-1]+1;
	kthAncestor[curStep][0] = curStep-1;
	for(int i = 1; 1<<i <= depth[curStep]; i++) {
		kthAncestor[curStep][i] = kthAncestor[kthAncestor[curStep][i-1]][i-1];
	}
}

void UndoCommands(int U) {
	curStep++;
	charOfStep[curStep] = charOfStep[curStep-1-U];
	depth[curStep] = depth[curStep-1-U];
	kthAncestor[curStep][0] = kthAncestor[curStep-1-U][0];
	for(int i = 1; 1<<i <= depth[curStep]; i++) {
		kthAncestor[curStep][i] = kthAncestor[kthAncestor[curStep][i-1]][i-1];
	}
}

string s;
char GetLetter(int P) {
  int node = curStep;
  for(int i = 21; i >= 0; i--)
  	if(depth[node] - (1<<i) >= P+1)
  		node = kthAncestor[node][i];
  return charOfStep[node];
}

Compilation message (stderr)

scrivener.cpp:1:10: fatal error: grader.h: No such file or directory
 #include "grader.h"
          ^~~~~~~~~~
compilation terminated.