Submission #420433

#	Time	Username	Problem	Language	Result	Execution time	Memory
420433		kostia244	Airline Route Map (JOI18_airline)	C++17	Compilation error	0 ms	0 KiB

Alice

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

void Bob( int V, int U, int C[], int D[] ){
	if(V < 3 || U == 0) {
		InitMap(V, U);
		for(int i = 0; i < U; i++)
			MakeMap(C[i], D[i]);
		return;
	}
	
	vector<int> label(3024);
	for(int z = 0, i = 0; i < 1000; i++) {
		while(z > 1 && !(z&(z-1))) z++;
		label[z ? z : 1023] = i;
		z++;
	}

	vector<vector<int>> g(V);
	vector<int> real(V, -1);
	for(int i = 0; i < U; i++) {
		g[C[i]].push_back(D[i]);
		g[D[i]].push_back(C[i]);
	}
	int sun = 0;
	while(g[sun].size()!=1) sun++;
	sun = g[sun][0];
	for(auto i : g[sun]) if(g[i].size()>1)real[i] = 0;
	int start = -1, prev = -1;
	for(int i = 0; i < V; i++) if(!real[i]) {
		int popcnt = -1;
		for(int j : g[i]) if(real[j]  && j != sun) {
			//cout << i << " to " << j<< endl;
			if(popcnt == -1) popcnt = j;
			if(popcnt != j) popcnt = -2;
		}
		if(popcnt >= 0) {
			//cout << "uwu " << i << " " << popcnt << endl;
			start = popcnt;
			break;
		}
	}
	//cout << start << "hm\n" << endl;
	vector<int> bits {start};
	while(bits.size() < 10) {
		for(auto i : g[start]) if(real[i] && i != prev) {
			prev = start;
			start = i;
			break;
		}
		bits.push_back(start);
	}

	for(int i = 0; i < 10; i++) {
		for(int j : g[bits[i]]) if(real[j] != -1)
			real[j] += 1<<i;
	}

	//for(auto i : real) cout << i << " "; cout << endl;
	for(int &i : real) if(i != -1) i = label[i];
	//for(auto i : real) cout << i << " "; cout << endl;

	int ed = 0;
	for(int i = 0; i < U; i++)
		ed += real[C[i]] >= 0 && real[D[i]] >= 0;
	InitMap(V-12, ed );
	for(int i = 0; i < U; i++) {
		if(real[C[i]] >= 0 && real[D[i]] >= 0)
			MakeMap(real[C[i]], real[D[i]]);
	}
}

Bob

Compilation message (stderr)

/usr/bin/ld: /tmp/ccgYOU9c.o: in function `Bob(int, int, int*, int*)':
Alice.cpp:(.text+0x4c5): undefined reference to `InitMap(int, int)'
/usr/bin/ld: Alice.cpp:(.text+0x509): undefined reference to `MakeMap(int, int)'
/usr/bin/ld: Alice.cpp:(.text+0x5c4): undefined reference to `InitMap(int, int)'
/usr/bin/ld: Alice.cpp:(.text+0x5d9): undefined reference to `MakeMap(int, int)'
/usr/bin/ld: /tmp/cc79e4id.o: in function `main':
grader_alice.cpp:(.text.startup+0xa2): undefined reference to `Alice(int, int, int*, int*)'
collect2: error: ld returned 1 exit status

/usr/bin/ld: /tmp/ccQWT0w1.o: in function `main':
grader_bob.cpp:(.text.startup+0xb2): undefined reference to `Bob(int, int, int*, int*)'
collect2: error: ld returned 1 exit status