// 5.1.js
// 2024-11-02
// $Id: 5.1.js 1.1 2024/11/02 11:30:48 s Exp $

// initialization
ol      = new Array(6);
pw      = new Array(6);
npv     = new Array(6);
x       = [[],[],[],[],[],[],[],[],[],[],
           [],[],[],[],[],[],[],[],[],[],
           [],[],[],[],[],[],[],[],[],[],
           [],[],[],[],[],[]];
scost   = new Array(32);
snpv    = new Array(32);
comment = new Array(32);
comment.fill("-");

// input
ol[1] = 100;
ol[2] = 300;
ol[3] = 200;
ol[4] = 150;
ol[5] = 150;
pw[1] = 200;
pw[2] = 500;
pw[3] = 300;
pw[4] = 200;
pw[5] = 250;

// calculation
for(i=1; i<=5; i++){
    npv[i] = pw[i] - ol[i];
}  
ns=0;
snpvmax=0;
for(i=0; i<=1; i++){
  for(j=0; j<=1; j++){
    for(k=0; k<=1; k++){
      for(l=0; l<=1; l++){
        for(m=0; m<=1; m++){
          x[ns][1] = i;
          x[ns][2] = j;
          x[ns][3] = k;
          x[ns][4] = l;
          x[ns][5] = m;
          scost[ns] =  ol[1]*x[ns][1] +  ol[2]*x[ns][2] +  ol[3]*x[ns][3] +
                       ol[4]*x[ns][4] +  ol[5]*x[ns][5];
          snpv[ns] =  npv[1]*x[ns][1] + npv[2]*x[ns][2] + npv[3]*x[ns][3] +
                      npv[4]*x[ns][4] + npv[5]*x[ns][5];
          if(scost[ns]>600){
            comment[ns]="cost>600";
          }
          else if(snpv[ns] > snpvmax){
              snpvmax = snpv[ns];
          }
          ns++
        }
      }
    }
  }
}
for(i=0; i<=31; i++){
  if(scost[i]<=600 && snpv[i]==snpvmax){ 
    comment[i] = "optimal";
  }
}

// output
console.log("5.1.js");
console.log("ns".padStart(3),
            "x1".padStart(3),
            "x2".padStart(3),
            "x3".padStart(3),
            "x4".padStart(3),
            "x5".padStart(3),
          "cost".padStart(5),
           "npv".padStart(4),
            "comment");

hr(43);
for(i=0; i<=31; i++){
    console.log(
              i.toFixed(0).padStart(3),
        x[i][1].toFixed(0).padStart(3),
        x[i][2].toFixed(0).padStart(3),
        x[i][3].toFixed(0).padStart(3),
        x[i][4].toFixed(0).padStart(3),
        x[i][5].toFixed(0).padStart(3),
       scost[i].toFixed(0).padStart(5),
        snpv[i].toFixed(0).padStart(4),
     comment[i]
    );
}
hr(43);

function hr(n){
  dash =""
  for(i=1; i<=n; i++) dash = dash+ "-"
  console.log("%s",dash);
}
// end