#include<stdio.h>
#include<stdlib.h>
#include<stdint.h>
#include<inttypes.h>

typedef int32_t i32;
typedef int64_t i64;

#define MIN(a,b) ((a) < (b) ? (a) : (b))

void run (void) {
  i32 n;
  scanf ("%" SCNi32, &n);
  i64 *k = (i64 *) calloc (3 * n, sizeof (i64));
  i64 *a = k + n;
  i64 *d = a + n;
  for (i32 i = 0; i < n; ++i) {
    scanf ("%" SCNi64 "%" SCNi64 "%" SCNi64, k + i, a + i, d + i);
    d[i] = (i64) 1 << d[i];
  }
  i64 l = -1;
  i64 r = 1000000000000000000LL;
  while (r - l > 1) {
    i64 m = (r + l) / 2;
    i64 cnt = 0;
    for (i32 i = 0; i < n; ++i) {
      if (a[i] > m) continue;
      cnt ^= MIN(k[i], 1 + (m - a[i]) / d[i]);
    }
    if (cnt % 2 == 1) {
      r = m;
    } else {
      l = m;
    }
  }
  printf ("%" PRIi64 "\n", r);
}

int main (void) {
  run();
  return 0;
}