P0_first=0.43 //the initial value of the probability of erasure bits
P0_last=0.29 //the final value of the probability of erasure bits
P0_step=0.01; //step of changing the probabilities of erasure bits 
volume=100000; //maximum number of transmitted bits during the experiment
minBlockErr=30; //maximum number of blocks to erase
itert=10; //number of iterations multithreshold decoding