Submission #908276

#	Time	Username	Problem	Language	Result	Execution time	Memory
908276		shoryu386	Coreputer (IOI23_coreputer)	C++17	Compilation error	0 ms	0 KiB

coreputer

#include "coreputer.h"

#include <cassert>
#include <cstdio>
#include <string>
#include <vector>

static inline constexpr int maxDiagnostics = 32;
static int diagnostic_counter = 0;
static int malfunctioningCores = 0;

static int N;
static std::vector<int> M;

static inline void protocol_violation(std::string message) {
	printf("Protocol Violation: %s\n", message.c_str());
	exit(0);
}

int run_diagnostic(std::vector<int> T) {
	++diagnostic_counter;
	if (diagnostic_counter > maxDiagnostics) {
		protocol_violation("too many calls");
	}

	int l = T.size();
	if (l > N) {
		protocol_violation("invalid array");
	}

	for (int i = 0; i < l; ++i) {
		if (T[i] < 0 || T[i] >= N) {
			protocol_violation("invalid array");
		}
		for (int j = 0; j < i; ++j) {
			if (T[i] == T[j]) {
				protocol_violation("invalid array");
			}
		}
	}

	int malfunctioningTaggedCores = 0;
    for (int i : T) {
        if (M[i] == 1) malfunctioningTaggedCores++;
    }

    int malfunctioningUntaggedCores = malfunctioningCores - malfunctioningTaggedCores;
    if (malfunctioningTaggedCores > malfunctioningUntaggedCores) {
        return 1;
    }
    if (malfunctioningTaggedCores == malfunctioningUntaggedCores) {
        return 0;
    }
    return -1;
}

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


vector<int> ntwo(){
	int res = run_diagnostic({0});
	
	if (res == 1){
		return {1, 0};
	}
	else if (res == 0){
		int any = run_diagnostic({0, 1});
		
		if (any == 0){
			return {0, 0};
		}
		else return {1, 1};
	}
	else return {0, 1};
}

vector<int> malfunctioning_cores(int N) {
	if (N == 2){
		return ntwo();
	}
	
	//if malfunctioning cores is even
	int results[16];
	
	for (int x = 0; x < 16; x++){
		vector<int> bruh;
		for (int y = 0; y <= x; y++) bruh.push_back(y);
		
		results[x] = run_diagnostic(bruh);
	}
	
	int firstZero = -1, lastZero = -1;
	for (int x = 0; x < 16; x++){
		if (results[x] == 0){
			if (firstZero == -1) firstZero = x;
			
			lastZero = x;
		}
	}
	
	assert(lastZero != -1); //even case
	
	if (firstZero == 0 && lastZero == 15){
		return {0, 0, 0, 0,
			0, 0, 0, 0,
			0, 0, 0, 0,
			0, 0, 0, 0};
	}
	
	cerr << firstZero << ' ' << lastZero << '\n';
	
	//our malfunctions are at firstZero, and lastZero+1
	//we also now know that there are an equal number of malfunctions in the two segments [0, firstZero-1] and [lastZero+2, 15]
	
	vector<int> ans(16, 0);
	ans[firstZero] = 1;
	ans[lastZero+1] = 1;
	
	for (int x = 15; x > lastZero+1; x--){
		//include [0, firstZero], include [lastZero+1, 15], except one element
		
		vector<int> cur;
		
		#define ADDRANGE(a, b) for (int y = a; y <= b; y++) cur.push_back(y); 
		
		ADDRANGE(0, firstZero);
		//ADDRANGE(lastZero+1, 15);
		
		//cur.erase(find(cur.begin(), cur.end(), x));
		ADDRANGE(x, x);
		
		int res = run_diagnostic(cur);
		
		//cerr << "\n run: \n";
		//for (auto y : cur) cerr << y << ' ';
		//cerr << '\n';
		//cerr << res << '\n';
		
		if (res == 0){
			ans[x] = 0;
		}
		else ans[x] = 1;
	}
	
	for (int x = 0; x < firstZero; x++){
		//include [0, firstZero], exclude [lastZero+1, 15], except one element
		vector<int> cur;
		
		#define ADDRANGE(a, b) for (int y = a; y <= b; y++) cur.push_back(y); 
		
		//ADDRANGE(0, firstZero);
		ADDRANGE(lastZero+1, 15);
		
		ADDRANGE(x, x);
		//cur.erase(find(cur.begin(), cur.end(), x));
		
		int res = run_diagnostic(cur);
		
		if (res == 0){
			ans[x] = 0;
		}
		else ans[x] = 1;
	}
	
	return ans;
	
	
}


int main() {
	assert(1 == scanf("%d", &N));
	M.resize(N);
	for (int i = 0; i < N; ++i) {
		assert(1 == scanf("%d", &M[i]));
		malfunctioningCores += M[i];
	}

	if (malfunctioningCores == 0) {
		printf("No Malfunctioning Core\n");
        exit(0);
	}

	std::vector<int> c = malfunctioning_cores(N);
	int n = c.size();
	for (int i = 0; i < n; ++i) {
		printf(i == 0 ? "%d" : " %d", c[i]);
	}
	printf("\n");
	printf("%d\n", diagnostic_counter);

	return 0;
}

Compilation message (stderr)

/usr/bin/ld: /tmp/cc4gBAOn.o: in function `run_diagnostic(std::vector<int, std::allocator<int> >)':
stub.cpp:(.text+0xc0): multiple definition of `run_diagnostic(std::vector<int, std::allocator<int> >)'; /tmp/ccfgGolq.o:coreputer.cpp:(.text+0x30): first defined here
/usr/bin/ld: /tmp/cc4gBAOn.o: in function `main':
stub.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccfgGolq.o:coreputer.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status