/* -*- coding: utf-8 -*-
 *
 * 3010.cc:  No.3010 豌ｴ濶ｲ繧ｳ繝ｼ繝€繝ｼ縺輔ｓ - yukicoder
 */

#include<cstdio>
#include<algorithm>

using namespace std;

/* constant */

const int MAX_N = 200000;
const int MAX_M = 10;
const int K = 4;
const int R = 1200;

/* typedef */

/* global variables */

/* subroutines */

/* main */

int main() {
  int n, m;
  scanf("%d%d", &n, &m);

  int cnt = 0;
  for (int i = 0; i < n; i++) {
    char s[MAX_M + 4];
    int ri;
    scanf("%s%d", s, &ri);

    int xc = 0;
    for (int j = 0; j < K; j++)
      if (s[j] == 'x') xc++;

    if (ri >= R && xc > 0) cnt++;
  }

  printf("%d\n", cnt);

  return 0;
}