import java.io.File;
import java.io.FileNotFoundException;
import java.math.BigInteger;
import java.util.Scanner;
public class Kertoma3 {
public static void main(String[] args) throws FileNotFoundException {
Scanner scanner = new Scanner(System.in);
//Scanner scanner = new Scanner(new File("maarat.txt"));
String[] numerotString = scanner.nextLine().split(" ");
int[] numerot = new int[10];
int yhteensa = 0;
for (int i = 0; i < 10; i++) {
numerot[i] = Integer.parseInt(numerotString[i]);
yhteensa += numerot[i];
}
if (yhteensa <= 6) {
System.out.print(pienempiKuin10(numerot));
return;
}
if (yhteensa <= 2000) {
pieni(numerot, yhteensa);
return;
}
int[] tuhat = getKertomanPituus(yhteensa);
int alku = tuhat[0];
int bitteja = tuhat[1];
int kymmenen = tuhat[2];
int maara = BigInteger.TEN.pow(yhteensa).multiply(BigInteger.valueOf(5)).bitLength() + 2;
int puuttuu = maara - bitteja - 15;
int lisa = 0;
BigInteger kertoma = BigInteger.valueOf(alku * 1000L);
int luku = alku * 1000;
while (true) {
int bits = kertoma.bitLength();
if (bits >= puuttuu) {
if (kertoma.toString().length() + kymmenen >= yhteensa) {
//System.out.println(luku + ": " + (bits - puuttuu));
System.out.print(luku + lisa);
break;
}
}
lisa = 1;
luku++;
kertoma = kertoma.multiply(BigInteger.valueOf(luku));
}
}
public static int[] getKertomanPituus(int m) {
if (m<2568) return new int[]{0,0,2568};
if (m<5736) return new int[]{1,8530,5736};
if (m<9131) return new int[]{2,19053,9131};
if (m<12674) return new int[]{3,30332,12674};
if (m<16326) return new int[]{4,42100,16326};
if (m<20066) return new int[]{5,54233,20066};
if (m<23878) return new int[]{6,66656,23878};
if (m<27753) return new int[]{7,79321,27753};
if (m<31682) return new int[]{8,92193,31682};
if (m<35660) return new int[]{9,105246,35660};
if (m<39681) return new int[]{10,118459,39681};
if (m<43742) return new int[]{11,131816,43742};
if (m<47838) return new int[]{12,145305,47838};
if (m<51969) return new int[]{13,158915,51969};
if (m<56130) return new int[]{14,172635,56130};
if (m<60320) return new int[]{15,186458,60320};
if (m<64538) return new int[]{16,200378,64538};
if (m<68781) return new int[]{17,214388,68781};
if (m<73048) return new int[]{18,228483,73048};
if (m<77338) return new int[]{19,242658,77338};
if (m<81649) return new int[]{20,256909,81649};
if (m<85982) return new int[]{21,271233,85982};
if (m<90334) return new int[]{22,285624,90334};
if (m<94705) return new int[]{23,300082,94705};
if (m<99094) return new int[]{24,314602,99094};
if (m<103501) return new int[]{25,329183,103501};
if (m<107924) return new int[]{26,343821,107924};
if (m<112363) return new int[]{27,358515,112363};
if (m<116818) return new int[]{28,373262,116818};
if (m<121288) return new int[]{29,388060,121288};
if (m<125772) return new int[]{30,402909,125772};
if (m<130271) return new int[]{31,417805,130271};
if (m<134782) return new int[]{32,432748,134782};
if (m<139307) return new int[]{33,447736,139307};
if (m<143845) return new int[]{34,462768,143845};
if (m<148395) return new int[]{35,477842,148395};
if (m<152958) return new int[]{36,492958,152958};
if (m<157532) return new int[]{37,508113,157532};
if (m<162117) return new int[]{38,523308,162117};
if (m<166714) return new int[]{39,538541,166714};
if (m<171321) return new int[]{40,553810,171321};
if (m<175939) return new int[]{41,569116,175939};
if (m<180568) return new int[]{42,584457,180568};
if (m<185206) return new int[]{43,599832,185206};
if (m<189855) return new int[]{44,615240,189855};
if (m<194513) return new int[]{45,630682,194513};
if (m<199180) return new int[]{46,646156,199180};
if (m<203857) return new int[]{47,661660,203857};
if (m<208542) return new int[]{48,677196,208542};
if (m<213237) return new int[]{49,692762,213237};
if (m<217940) return new int[]{50,708357,217940};
if (m<222652) return new int[]{51,723981,222652};
if (m<227372) return new int[]{52,739633,227372};
if (m<232101) return new int[]{53,755313,232101};
if (m<236837) return new int[]{54,771020,236837};
if (m<241581) return new int[]{55,786754,241581};
if (m<246333) return new int[]{56,802515,246333};
if (m<251093) return new int[]{57,818301,251093};
if (m<255860) return new int[]{58,834112,255860};
if (m<260635) return new int[]{59,849948,260635};
if (m<265416) return new int[]{60,865809,265416};
if (m<270205) return new int[]{61,881693,270205};
if (m<275001) return new int[]{62,897601,275001};
if (m<279804) return new int[]{63,913533,279804};
if (m<284614) return new int[]{64,929488,284614};
if (m<289430) return new int[]{65,945465,289430};
if (m<294253) return new int[]{66,961464,294253};
if (m<299082) return new int[]{67,977485,299082};
if (m<303918) return new int[]{68,993527,303918};
if (m<308760) return new int[]{69,1009591,308760};
if (m<313608) return new int[]{70,1025676,313608};
if (m<318462) return new int[]{71,1041781,318462};
if (m<323322) return new int[]{72,1057907,323322};
if (m<328189) return new int[]{73,1074053,328189};
if (m<333061) return new int[]{74,1090218,333061};
if (m<337939) return new int[]{75,1106403,337939};
if (m<342822) return new int[]{76,1122607,342822};
if (m<347712) return new int[]{77,1138830,347712};
if (m<352607) return new int[]{78,1155072,352607};
if (m<357507) return new int[]{79,1171333,357507};
if (m<362413) return new int[]{80,1187611,362413};
if (m<367324) return new int[]{81,1203908,367324};
if (m<372240) return new int[]{82,1220223,372240};
if (m<377162) return new int[]{83,1236555,377162};
if (m<382089) return new int[]{84,1252904,382089};
if (m<387021) return new int[]{85,1269271,387021};
if (m<391958) return new int[]{86,1285654,391958};
if (m<396900) return new int[]{87,1302055,396900};
if (m<401847) return new int[]{88,1318472,401847};
if (m<406799) return new int[]{89,1334905,406799};
if (m<411755) return new int[]{90,1351355,411755};
if (m<416717) return new int[]{91,1367820,416717};
if (m<421683) return new int[]{92,1384302,421683};
if (m<426654) return new int[]{93,1400799,426654};
if (m<431629) return new int[]{94,1417312,431629};
if (m<436609) return new int[]{95,1433840,436609};
if (m<441594) return new int[]{96,1450383,441594};
if (m<446583) return new int[]{97,1466941,446583};
if (m<451576) return new int[]{98,1483514,451576};
if (m<456574) return new int[]{99,1500102,456574};
if (m<461576) return new int[]{100,1516705,461576};
if (m<466583) return new int[]{101,1533322,466583};
if (m<471593) return new int[]{102,1549953,471593};
if (m<476608) return new int[]{103,1566598,476608};
if (m<481627) return new int[]{104,1583257,481627};
if (m<486651) return new int[]{105,1599930,486651};
if (m<491678) return new int[]{106,1616617,491678};
if (m<496709) return new int[]{107,1633318,496709};
if (m<501745) return new int[]{108,1650032,501745};
if (m<506784) return new int[]{109,1666759,506784};
if (m<511828) return new int[]{110,1683500,511828};
if (m<516875) return new int[]{111,1700253,516875};
if (m<521926) return new int[]{112,1717020,521926};
if (m<526981) return new int[]{113,1733800,526981};
if (m<532040) return new int[]{114,1750592,532040};
if (m<537102) return new int[]{115,1767397,537102};
if (m<542169) return new int[]{116,1784214,542169};
if (m<547239) return new int[]{117,1801044,547239};
if (m<552312) return new int[]{118,1817887,552312};
if (m<557390) return new int[]{119,1834741,557390};
if (m<562471) return new int[]{120,1851608,562471};
if (m<567555) return new int[]{121,1868487,567555};
if (m<572644) return new int[]{122,1885377,572644};
if (m<577735) return new int[]{123,1902280,577735};
if (m<582830) return new int[]{124,1919194,582830};
if (m<587929) return new int[]{125,1936119,587929};
if (m<593031) return new int[]{126,1953057,593031};
if (m<598137) return new int[]{127,1970006,598137};
if (m<603246) return new int[]{128,1986966,603246};
if (m<608358) return new int[]{129,2003937,608358};
if (m<613473) return new int[]{130,2020920,613473};
if (m<618592) return new int[]{131,2037913,618592};
if (m<623715) return new int[]{132,2054918,623715};
if (m<628840) return new int[]{133,2071934,628840};
if (m<633969) return new int[]{134,2088960,633969};
if (m<639101) return new int[]{135,2105998,639101};
if (m<644236) return new int[]{136,2123045,644236};
if (m<649374) return new int[]{137,2140104,649374};
if (m<654516) return new int[]{138,2157173,654516};
if (m<659660) return new int[]{139,2174253,659660};
if (m<664808) return new int[]{140,2191342,664808};
if (m<669959) return new int[]{141,2208443,669959};
if (m<675112) return new int[]{142,2225553,675112};
return new int[]{0, 1};
}
public static int pienempiKuin10(int[] numerot) {
if (numerot[2] == 1) { // 2 4 5 6 8 9
if (numerot[0] == 1) { // 5 6 9
if (numerot[1] == 1)
return 5;
if (numerot[7] == 1)
return 6;
return 9;
} else { // 2 4 8
if (numerot[4] == 0)
return 2;
if (numerot[0] == 0)
return 4;
return 8;
}
} else { // 1 3 7
if (numerot[1] == 1)
return 1;
if (numerot[6] == 1)
return 3;
return 7;
}
}
public static void pieni(int[] numerot, int yhteensa) {
int jaljella = numerot[0];
int[] maarat = new int[8];
int kerroin = 97656; // * 5n+1 8 kertaa,
for (int i = 0; i < 8; i++) {
int maara = (int) (jaljella / (double) kerroin);
jaljella -= maara;
maarat[7 - i] = maara;
kerroin -= 1;
kerroin *= 0.2;
}
int bitteja = BigInteger.TEN.pow(yhteensa).bitLength();
int max = maarat[0] * 5; // Jos kaikki nollat olisivat luvun lopussa, tämä luku olisi
int min = 10;
int perus = (int) ((min + max) * 0.5f);
BigInteger edellinenPienempi = kertoma(new BigInteger(min + ""));
int edellinenPienempiLuku = min - 1;
while (true) {
BigInteger kertoma = kertoma(new BigInteger(perus + ""), new BigInteger(edellinenPienempiLuku + 1 + "")).multiply(edellinenPienempi);
int pituus = kertoma.bitLength();
int ero = pituus - bitteja;
if (ero >= 0 && ero <= 4) {
int len = kertoma.toString().length();
// System.out.println("kertoma: " + perus + ", pituus: " + len + ", oikea: " + yhteensa);
if (len - 1 == yhteensa) {
System.out.print(perus);
return;
}
}
if (ero > 0) {
if (max == perus) break;
max = perus;
} else {
if (min == perus) break;
min = perus;
edellinenPienempi = kertoma;
edellinenPienempiLuku = perus;
}
perus = min + (max - min) / 2;
}
}
public static BigInteger kertoma(BigInteger luku) {
if (luku.compareTo(BigInteger.ONE) == 0) {
return luku;
}
return kertoma(luku.subtract(BigInteger.ONE)).multiply(luku);
}
public static BigInteger kertoma(BigInteger luku, BigInteger asti) {
if (luku.compareTo(asti) == 0) {
return luku;
}
return kertoma(luku.subtract(BigInteger.ONE), asti).multiply(luku);
}
}
