Submission #1008505

#	Time	Username	Problem	Language	Result	Execution time	Memory
1008505		Math4Life2020	Magic Show (APIO24_show)	C++17	Compilation error	0 ms	0 KiB

Alice

// Source: https://usaco.guide/general/io

#include <bits/stdc++.h>
#include "Alice.h"
using namespace std;
using ll = long long;
using ld = long double;
using pii = pair<ll,ll>;
ll N = 5000;
ll E = 60; 

ld seed = 0.697810983;
ld getseed() {
	seed = 3.60*seed*(1.0-seed);
	return seed;
}

ll getrng(ll x) { //random integer in [0,x-1]
	return (((ll) round(1912873139*getseed()))%x);
}

ll l2(ll x) {
	return (31-__builtin_clz(x));
}

vector<pii> Alice() {
	ll X = setN((int) N);
	vector<pii> vout;
	vector<bool> xv;
	for (ll e=(E-1);e>=0;e--) {
		xv.push_back((X>>e)%2);
	}
	for (ll n=1;n<N;n++) {
		ll D = l2(n)-1;
		ll val = 0;
		for (ll d=0;d<D;d++) {
			ll e = getrng(E);
			val += xv[e]*(1LL<<d);
		}
		vout.push_back({val+1,n+1});
	}
	return vout;
}

long long Bob(vector<pii> V) {
	ll vals[N];
	for (ll i=0;i<N;i++) {
		vals[i]=-1;
	}
	for (pii p0: V) {
		vals[p0.second-1]=p0.first-1;
	}
	vector<ll> xv;
	for (ll e=(E-1);e>=0;e--) {
		xv.push_back(-1);
	}
	for (ll n=1;n<N;n++) {
		ll D = l2(n)-1;
		for (ll d=0;d<D;d++) {
			ll e = getrng(E);
			//val += xv[e]*(1LL<<d);
			if (vals[n]!=-1) {
				xv[e]=(vals[n]>>d)%2;
			}
		}
	}
	ll X = 0;
	for (ll e=0;e<E;e++) {
		X += xv[e]*(1LL<<(E-1-e));
	}
	return X;
}

Bob

// Source: https://usaco.guide/general/io

#include <bits/stdc++.h>
#include "Bob.h"
using namespace std;
using ll = long long;
using ld = long double;
using pii = pair<ll,ll>;
ll N = 5000;
ll E = 60; 

ld seed = 0.697810983;
ld getseed() {
	seed = 3.60*seed*(1.0-seed);
	return seed;
}

ll getrng(ll x) { //random integer in [0,x-1]
	return (((ll) round(1912873139*getseed()))%x);
}

ll l2(ll x) {
	return (31-__builtin_clz(x));
}

long long Bob(vector<pii> V) {
	ll vals[N];
	for (ll i=0;i<N;i++) {
		vals[i]=-1;
	}
	for (pii p0: V) {
		vals[p0.second-1]=p0.first-1;
	}
	vector<ll> xv;
	for (ll e=(E-1);e>=0;e--) {
		xv.push_back(-1);
	}
	for (ll n=1;n<N;n++) {
		ll D = l2(n)-1;
		for (ll d=0;d<D;d++) {
			ll e = getrng(E);
			//val += xv[e]*(1LL<<d);
			if (vals[n]!=-1) {
				xv[e]=(vals[n]>>d)%2;
			}
		}
	}
	ll X = 0;
	for (ll e=0;e<E;e++) {
		X += xv[e]*(1LL<<(E-1-e));
	}
	return X;
}

Compilation message (stderr)

Alice.cpp:26:13: error: ambiguating new declaration of 'std::vector<std::pair<long long int, long long int> > Alice()'
   26 | vector<pii> Alice() {
      |             ^~~~~
In file included from Alice.cpp:4:
Alice.h:3:33: note: old declaration 'std::vector<std::pair<int, int> > Alice()'
    3 | std::vector<std::pair<int,int>> Alice();
      |                                 ^~~~~

/usr/bin/ld: /tmp/ccQec65N.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