int main() {
long long lower, upper;
while ((scanf("%lld %lld",&lower,&upper)==2) && (lower>=0 && upper>=0)) {
printf("%lld\n",sumF(upper)-sumF(lower-1));
}
return 0;
}
/* Sum contributions from all threads, save to _force&_torque.
* Locks globalMutex, since one thread modifies common data (_force&_torque).
* Must be called before get* methods are used. Exception is thrown otherwise, since data are not consistent. */
inline void sync(){
for(int i=0; i<nThreads; i++){
if (_maxId[i] > 0) { synced = false;}
}
if(synced) return;
boost::mutex::scoped_lock lock(globalMutex);
if(synced) return; // if synced meanwhile
for(int i=0; i<nThreads; i++){
if (_maxId[i] > 0) { ensureSize(_maxId[i],i);}
}
syncSizesOfContainers();
for(long id=0; id<(long)size; id++){
Vector3r sumF(Vector3r::Zero()), sumT(Vector3r::Zero());
for(int thread=0; thread<nThreads; thread++){ sumF+=_forceData[thread][id]; sumT+=_torqueData[thread][id];}
_force[id]=sumF; _torque[id]=sumT;
if (permForceUsed) {_force[id]+=_permForce[id]; _torque[id]+=_permTorque[id];}
}
if(moveRotUsed){
for(long id=0; id<(long)size; id++){
Vector3r sumM(Vector3r::Zero()), sumR(Vector3r::Zero());
for(int thread=0; thread<nThreads; thread++){ sumM+=_moveData[thread][id]; sumR+=_rotData[thread][id];}
_move[id]=sumM; _rot[id]=sumR;
}
}
synced=true; syncCount++;
}
long long sumF(long long x){
if(x==0) return 0;
else if(x<10) return summation(x);
else return sumF(x/10)+(x/10*45)+summation(x%10);
}