Submission #997431

#	Time	Username	Problem	Language	Result	Execution time	Memory
997431		Trisanu_Das	Magic Show (APIO24_show)	C++17	Compilation error	0 ms	0 KiB

Alice

#include "Alice.h"
#include <bits/stdc++.h>
using namespace std;
 
// you may define some global variables, but it does not work if you try to transfer any information from function Alice() to function Bob() through these variables.
// you had better not use the same global variables in function Alice() and in function Bob().
 
long long par[5000];
 
long long find(long long x) {
	if(x == par[x]) {
		return x;
	}
	return find(par[x]);
}
 
void unite(long long a, long long b) {
	a = find(a);
	b = find(b);
	if(a == b) return;
	par[a] = b;
}
 
vector<pair<int,int> > Alice() {
	// add your code here
	
	// change below into your code
	iota(par, par + 5000, 0);
    long long x = setN(5000);
    long long center1 = (x - 1) / 5000;
    long long center2 = (x - 1) % 5000;
    long long center3 = (center2 - center1 + 5000) % 5000;
    vector<pair<int, int> > edges;
    for(long long i = 0; i < 1667; i++) {
    	if(center1 != i) {
    		if(find(center1) != find(i)) {
    			edges.push_back({center1 + 1, i + 1});
    			unite(i, center1);
    		}
    	}
    }
    for(long long i = 1667; i < 3334; i++) {
    	if(center2 != i) {
    		if(find(center2) != find(i)) {
    			edges.push_back({center2 + 1, i + 1});
    			unite(i, center2);
    		}
    	}	
    }
    for(long long i = 3334; i < 5000; i++) {
    	if(center3 != i) {
    		if(find(center3) != find(i)) {
    			edges.push_back({center3 + 1, i + 1});
    			unite(i, center3);
    		}
    	}
    }
    long long prev_same = -1;
    for(long long i = 0; i < 5000; i++) {
    	if(find(i) == i) {
    		if(prev_same != -1) {
    			edges.push_back({prev_same + 1, i + 1});
    		}
    		prev_same = i;
    	}
    }
    return edges;
}

Bob

Compilation message (stderr)

/usr/bin/ld: /tmp/ccKDCBNp.o: in function `main':
grader_bob.cpp:(.text.startup+0x324): undefined reference to `Bob(std::vector<std::pair<int, int>, std::allocator<std::pair<int, int> > >)'
collect2: error: ld returned 1 exit status