Submission #587390

#	Time	Username	Problem	Language	Result	Execution time	Memory
587390		GioChkhaidze	Crayfish scrivener (IOI12_scrivener)	C++14	Compilation error	0 ms	0 KiB

scrivener

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

int Tries,idx,q,D[1000006],dep[1000006],T[1000006][37];
int P[1000006][21];
char C[1000006];
main () {
	ios::sync_with_stdio(false);
	cin.tie(NULL);
	Tries=1;
	
	cin>>q;
	
	int Nowidx=1;
	
	D[0]=Nowidx;
	dep[Nowidx]=0;
	
	while (q--) {
		char c;
		int x;
		cin>>c;
		
		if (c=='T') {
			cin>>c;
			idx++;
			
			int t=c-'a';
			
			if (!T[Nowidx][t]) {
				T[Nowidx][t]=++Tries;
				C[Tries]=c;
				dep[T[Nowidx][t]]=dep[Nowidx]+1;
				P[T[Nowidx][t]][0]=Nowidx;
				
				for (int j=1; j<=20; j++)
					P[T[Nowidx][t]][j]=P[P[T[Nowidx][t]][j-1]][j-1];
			}
			
			D[idx]=T[Nowidx][t];
			Nowidx=D[idx];
		}
			else 
		if (c=='U')	 {
			cin>>x;
			idx++;	
			D[idx]=D[idx-x-1];
			Nowidx=D[idx];
		}
			else 
		if (c=='P') {  
			cin>>x;
			x++;
			int Nq=Nowidx;
			
			if (dep[Nq]==x) {
				cout<<C[Nq]<<"\n";
				continue;
			}
			
			for (int i=20; i>=0; i--) 
				if (dep[P[Nq][i]]>x) Nq=P[Nq][i];
				
			Nq=P[Nq][0];
			
			cout<<C[Nq]<<"\n";
		}
	}
}

Compilation message (stderr)

scrivener.cpp:7:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    7 | main () {
      | ^~~~
/usr/bin/ld: /tmp/ccBKHGvw.o: in function `main':
scrivener.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccbH4kGs.o:grader.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/ccbH4kGs.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+0x15f): undefined reference to `UndoCommands(int)'
/usr/bin/ld: grader.cpp:(.text.startup+0x18b): undefined reference to `GetLetter(int)'
collect2: error: ld returned 1 exit status