Submission #751973

#	Time	Username	Problem	Language	Result	Execution time	Memory
751973		minhcool	Crayfish scrivener (IOI12_scrivener)	C++17	Compilation error	0 ms	0 KiB

scrivener

#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
using namespace std;

#define ll long long
#define fi first
#define se second
#define pb push_back
#define mp make_pair

typedef pair<int, int> ii;
typedef pair<ii, int> iii;
typedef pair<ii, ii> iiii;

const int N = 1e6 + 5;

const int oo = 1e18 + 7, mod = 1e9 + 7;

mt19937 rng(1);

int n;

void init(){}

int cnt;

int lst[N][25], len[N];

char cc[N];

void typeletter(char c){
	cnt++;
	len[cnt] = len[cnt - 1] + 1;
	cc[cnt] = c;
	lst[cnt][0] = cnt - 1;
	for(int i = 1; i <= 20; i++) lst[cnt][i] = lst[lst[cnt][i - 1]][i - 1];
}

void UndoCommands(int x){
	cnt++;
	len[cnt] = len[cnt - x - 1];
	//lst[cnt][0] = lst[cnt - x - 1][0];
	cc[cnt] = cc[cnt - x - 1];
	for(int i = 0; i <= 20; i++) lst[cnt][i] = lst[cnt - x - 1][i];
}

char getLetter(int x){
	x++;
	int temp = cnt - x;
	int pos = cnt;
	for(int i = 20; i >= 0; i--) if(temp & (1LL << i)) pos = lst[pos][i];
	return cc[pos];
}

Compilation message (stderr)

scrivener.cpp:18:21: warning: overflow in conversion from 'double' to 'int' changes value from '1.0e+18' to '2147483647' [-Woverflow]
   18 | const int oo = 1e18 + 7, mod = 1e9 + 7;
      |                ~~~~~^~~
/usr/bin/ld: /tmp/ccXutmh8.o: in function `main':
grader.cpp:(.text.startup+0x63): undefined reference to `Init()'
/usr/bin/ld: grader.cpp:(.text.startup+0xff): undefined reference to `TypeLetter(char)'
/usr/bin/ld: grader.cpp:(.text.startup+0x18b): undefined reference to `GetLetter(int)'
collect2: error: ld returned 1 exit status