def main():
    s=0
    l=int(input())
    m=int(input())
    n=int(input())
    
    ls1=up25(n,m)
    ls2=up100(ls1[1],l)
    ls3=up1000(ls2[1],s)
    
    print(ls1[0]+ls2[0]+ls3[0])

def up25(pn,pm):
    while True:
        if pn>=25:
            pn-=25
            pm+=1
        else:
            break
    pls=[pn,pm]
    return pls
def up100(pm,pl):
    while True:
        if pm>=4:
            pm-=4
            pl+=1
        else:
            break
    pls=[pm,pl]
    return pls
def up1000(pl,ps):
    while True:
        if pl>=10:
            pl-=10
            ps+=1
        else:
            break
    pls=[pl,ps]
    return pls

if __name__=="__main__":
    main()