const reader = require("readline").createInterface({
  input: process.stdin,
  output: process.stdout
});
let lines = [];
reader.on("line", line => {
  lines.push(line);
});
reader.on("close", () => {
  const newArr = lines[0].split(' ').map(str => parseInt(str, 10))
  const difference1 = newArr[2] - newArr[0]
  const difference2 = newArr[2] - newArr[1]
  function compare(n) {
    return (n >= 0) ? true : false;
  }
  const compareResult1 = compare(difference1)
  const compareResult2 = compare(difference2)
  const answer1 = newArr[2]
  const answer2 = newArr[2] - 1
  const answer3 = newArr[2] - 2
  switch (compareResult1) {
    case true:
      if (compareResult2) {
        console.log(answer3)
      } else {
        console.log(answer2)
      }
      break;
    default:
      if (compareResult2) {
        console.log(answer2)
      } else {
        console.log(answer1)
      }
      break;
  }
});