function main(input){
  const a = input.trim()
  let count = 0
  for(let i=0; i<3; i++){
    if(a[i]=='o'){
      count++;
    }
  }
  let cnt = parseInt(count, 10);
  cosole.log(700+cnt);
}
main(require('fs').readFileSync('/dev/stdin', 'utf8'));