#include <stdlib.h>
#include <stdio.h>
#include <assert.h>
#define inbuf_len 1 << 16
#define outbuf_len 1 << 16
#include <bits/stdc++.h>
#define ii pair < char , char >
#define fi first
#define se second
using namespace std;
const int N=1e6+5;
ii a[N];
char s[N];
int cnt;
int i;
void Init() {}
void TypeLetter(char L) {
a[i]={'T',L};
i++;
}
void UndoCommands(int U) {
a[i]={'U','0'+U};
i++;
}
char GetLetter(int P) {
if(cnt==0)
{
int j=0;
while(i>0)
{
i--;
if(a[i].fi=='T')
{
s[j]=a[i].se;
j++;
}
else
{
i-=(a[i].se-'0');
}
}
reverse(s,s+j);
}
assert(0);
cnt=1;
return s[P];
}
int main() {
Init();
int cmd_num;
int tmp=1;
tmp = scanf("%d", &cmd_num);
assert(tmp == 1);
int i;
for (i = 0; i < cmd_num; i++) {
char cmd;
tmp = scanf(" %c", &cmd);
assert(tmp == 1);
if (cmd == 'T') {
char letter;
tmp = scanf(" %c", &letter);
assert(tmp == 1);
TypeLetter(letter);
}
else if (cmd == 'U') {
int number;
tmp = scanf("%d", &number);
assert(tmp == 1);
UndoCommands(number);
}
else if (cmd == 'P') {
int index;
char letter;
tmp = scanf("%d", &index);
assert(tmp == 1);
letter = GetLetter(index);
printf("%c\n", letter);
}
}
puts("Let's test for cheating!!");
return 0;
}
Compilation message
/tmp/ccJnCtUA.o: In function `main':
scrivener.cpp:(.text.startup+0x0): multiple definition of `main'
/tmp/ccc4h462.o:grader.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status
