function main(input) {
  const args = input.split('');
  let count = 0;
  for (let i = 0; i < args.length; i++) {
    args[i] === 'o' ? count++ : ''
  }
  
  console.log(700 + (100 * count));
}

main(require('fs').readFileSync('/dev/stdin', 'utf8'));