#include<iostream>
#include<cmath>


using namespace std;

float ativacaoOculta(float x){
    return  1 / (1 + pow(2.718,x));
}

float ativacaoSaida(float x){
	return x;
}

int main(){

	float input[12][3] = {
		{1,2,1},{1,4,3},{1,1,2},{1,1.8, 2.5},{1,1,1},{1,3,2.5},
		{1,2.5,1.5},{1,3.5,2.3},{1,3,3},{1,4.0,2.5},{1,1.8,1.5},{1,4.5,3.5}
	};

	int saidaDesejada[12][2] = {
	{1,0},{1,0},{1,0},{1, 0},{1,0},{1,0},
	{0,1},{0,1},{0,1},{0,1},{0,1},{0,1}
	};

	float pesoI[3][3] = {{-0.2,-0.1,0.3}, {0.5,-0.8,0.4},{0.1,0.1,-0.6}};

	float pesoS[2][4] =	{{-0.1,0.5,-0.3, 0.1},{ -0.3,0.2,0.6,-0.9}};

	float n = 0.1;
    float neuroI1 = 0,neuroI2 = 0,neuroI3 = 0;
    float camadaI[4]; camadaI[0] = 1;
    float e1, e2;
    float saida1 = 0,saida2 = 0;
    float errorInstataneo;

    for (int i = 0; i < 3; i++) {
        neuroI1 += pesoI[0][i]*input[0][i];
        neuroI2 += pesoI[1][i]*input[0][i];
        neuroI3 += pesoI[2][i]*input[0][i];
    }

    if (neuroI1 < 0) { neuroI1 = -neuroI1;}
    if (neuroI2 < 0) { neuroI2 = -neuroI2;}
    if (neuroI3 < 0) { neuroI3 = -neuroI3;}


    camadaI[1] = ativacaoOculta(neuroI1);
    camadaI[2] = ativacaoOculta(neuroI2);
    camadaI[3] = ativacaoOculta(neuroI3);

    for (int i = 0; i < 4; i++) {
        saida1 += pesoS[0][i]*camadaI[i];
        saida2 += pesoS[1][i]*camadaI[i];
    }

    saida1 = ativacaoSaida(saida1);
    saida2 = ativacaoSaida(saida2);

    e1 = saidaDesejada[0][0] - saida1;
    e2 = saidaDesejada[0][1] - saida2;

    errorInstataneo =  ((pow(e1,2.0) + pow(e2, 2.0))) / 2;

    cout << errorInstataneo << endl;

	return 0;
}