>>84
#include <stdio.h>
int main() {printf("1st year: 2 pcs.\n2nd year: 4 pcs.\n3rd year: 8 pcs.\n4th year:16 pcs.\n5th year: 32 pcs.\n6th year: 64 pcs.\n7th year: 128 pcs.\nThe answer is 7th year.\n"); return 0;}