n=19;
S=[3,501,779,1018,1214,1299,2047,2818,2990,3890,3933,4437,4889,5642,5643,6635,6811,7799,7823];
A=[408,254,492,592,12,234,924,367,480,468,28,784,585,374,45,235,313,328,802];