gen.cpp

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#include <fstream>
#include <iostream>
#include <string.h>
#include <stdlib.h>
#include <time.h>

using namespace std;

const int MAX = 100+5;

int n, m, k, g[MAX][MAX];

main() {
   srand(time(0));
   
   int n, icase;
   cin >> icase >> n >> m >> k;
   
   memset(g, 0, sizeof(g));
   
   int i, j, now;
   for (i = 0; i < k; i++) {
      int x = rand()%n, y = rand()%m;
      while (g[x][y])
         x = rand()%n, y = rand()%m;;
      g[x][y] = 1;
   }
   
   char* name = "machine0.in";
   name[7] += icase;
   if (name[7] > '9') 
      name[7] = '1', name[8] = '0', name[9] = '.', name[10] = 'i', name[11] = 'n', name[12] = '\0';
   
   ofstream fout(name);
   
   fout << n << ' ' << m << ' ' << k << endl;
   
   for (now = i = 0; i < n; i++)
      for (j = 0; j < m; j++)
         if (g[i][j])
            fout << now++ << ' ' << i << ' ' << j << endl;
   
   return 0;  
}