const fs = require('fs')
const readline = require('readline');

const readInterface = readline.createInterface({
    input: fs.createReadStream('input'),
    console: false
});

let re = /^(\d+)-(\d+) (\w+): (\w+)$/i
let valid = 0;

readInterface.on('line', function(line) {
  let result = re.exec(line);
  if (result == null) {
    return;
  }

  let min = Number(result[1]);
  let max = Number(result[2]);
  let match = result[3];
  let pass = result[4];

  let count = 0;
  pass.split('').forEach(x => x == match ? count++ : null);

  if (count >= min && count <= max) {
    valid++;
  };
});

readInterface.on('close', function(line) {
  console.log(valid);
});